Update github-pages and dependencies (#7850)

Summary:
The dependencies are updated to resolve github security vulnerabilities
warning.

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7850

Test Plan:
`bundle update`
`bundle exec jekyll serve`

Reviewed By: ajkr

Differential Revision: D25860828

Pulled By: jay-zhuang

fbshipit-source-id: 43f9b0a59853c8889daab2993a389a685bf3f0ef

docs/Gemfile

@@ -1,2 +1,4 @@
 source 'https://rubygems.org'
-gem 'github-pages', '~> 207'
+gem 'github-pages', '~> 209'
+
+gem "webrick", "~> 1.7"

docs/Gemfile.lock

@@ -1,7 +1,7 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    activesupport (6.0.3.2)
+    activesupport (6.0.3.4)
       concurrent-ruby (~> 1.0, >= 1.0.2)
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
@@ -17,37 +17,40 @@ GEM
     commonmarker (0.17.13)
       ruby-enum (~> 0.5)
     concurrent-ruby (1.1.7)
-    dnsruby (1.61.4)
+    dnsruby (1.61.5)
       simpleidn (~> 0.1)
-    em-websocket (0.5.1)
+    em-websocket (0.5.2)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0.6.0)
     ethon (0.12.0)
       ffi (>= 1.3.0)
     eventmachine (1.2.7)
     execjs (2.7.0)
-    faraday (1.0.1)
+    faraday (1.3.0)
+      faraday-net_http (~> 1.0)
       multipart-post (>= 1.2, < 3)
-    ffi (1.13.1)
+      ruby2_keywords
+    faraday-net_http (1.0.0)
+    ffi (1.14.2)
     forwardable-extended (2.6.0)
     gemoji (3.0.1)
-    github-pages (207)
+    github-pages (209)
       github-pages-health-check (= 1.16.1)
       jekyll (= 3.9.0)
       jekyll-avatar (= 0.7.0)
       jekyll-coffeescript (= 1.1.1)
       jekyll-commonmark-ghpages (= 0.1.6)
       jekyll-default-layout (= 0.1.4)
-      jekyll-feed (= 0.13.0)
+      jekyll-feed (= 0.15.1)
       jekyll-gist (= 1.5.0)
       jekyll-github-metadata (= 2.13.0)
-      jekyll-mentions (= 1.5.1)
+      jekyll-mentions (= 1.6.0)
       jekyll-optional-front-matter (= 0.3.2)
       jekyll-paginate (= 1.1.0)
       jekyll-readme-index (= 0.3.0)
-      jekyll-redirect-from (= 0.15.0)
+      jekyll-redirect-from (= 0.16.0)
       jekyll-relative-links (= 0.6.1)
-      jekyll-remote-theme (= 0.4.1)
+      jekyll-remote-theme (= 0.4.2)
       jekyll-sass-converter (= 1.5.2)
       jekyll-seo-tag (= 2.6.1)
       jekyll-sitemap (= 1.4.0)
@@ -55,7 +58,7 @@ GEM
       jekyll-theme-architect (= 0.1.1)
       jekyll-theme-cayman (= 0.1.1)
       jekyll-theme-dinky (= 0.1.1)
-      jekyll-theme-hacker (= 0.1.1)
+      jekyll-theme-hacker (= 0.1.2)
       jekyll-theme-leap-day (= 0.1.1)
       jekyll-theme-merlot (= 0.1.1)
       jekyll-theme-midnight (= 0.1.1)
@@ -66,14 +69,14 @@ GEM
       jekyll-theme-tactile (= 0.1.1)
       jekyll-theme-time-machine (= 0.1.1)
       jekyll-titles-from-headings (= 0.5.3)
-      jemoji (= 0.11.1)
+      jemoji (= 0.12.0)
       kramdown (= 2.3.0)
       kramdown-parser-gfm (= 1.1.0)
       liquid (= 4.0.3)
       mercenary (~> 0.3)
       minima (= 2.5.1)
       nokogiri (>= 1.10.4, < 2.0)
-      rouge (= 3.19.0)
+      rouge (= 3.23.0)
       terminal-table (~> 1.4)
     github-pages-health-check (1.16.1)
       addressable (~> 2.3)
@@ -81,7 +84,7 @@ GEM
       octokit (~> 4.0)
       public_suffix (~> 3.0)
       typhoeus (~> 1.3)
-    html-pipeline (2.13.0)
+    html-pipeline (2.14.0)
       activesupport (>= 2)
       nokogiri (>= 1.4)
     http_parser.rb (0.6.0)
@@ -114,14 +117,14 @@ GEM
       rouge (>= 2.0, < 4.0)
     jekyll-default-layout (0.1.4)
       jekyll (~> 3.0)
-    jekyll-feed (0.13.0)
+    jekyll-feed (0.15.1)
       jekyll (>= 3.7, < 5.0)
     jekyll-gist (1.5.0)
       octokit (~> 4.2)
     jekyll-github-metadata (2.13.0)
       jekyll (>= 3.4, < 5.0)
       octokit (~> 4.0, != 4.4.0)
-    jekyll-mentions (1.5.1)
+    jekyll-mentions (1.6.0)
       html-pipeline (~> 2.3)
       jekyll (>= 3.7, < 5.0)
     jekyll-optional-front-matter (0.3.2)
@@ -129,14 +132,15 @@ GEM
     jekyll-paginate (1.1.0)
     jekyll-readme-index (0.3.0)
       jekyll (>= 3.0, < 5.0)
-    jekyll-redirect-from (0.15.0)
+    jekyll-redirect-from (0.16.0)
       jekyll (>= 3.3, < 5.0)
     jekyll-relative-links (0.6.1)
       jekyll (>= 3.3, < 5.0)
-    jekyll-remote-theme (0.4.1)
+    jekyll-remote-theme (0.4.2)
       addressable (~> 2.0)
       jekyll (>= 3.5, < 5.0)
-      rubyzip (>= 1.3.0)
+      jekyll-sass-converter (>= 1.0, <= 3.0.0, != 2.0.0)
+      rubyzip (>= 1.3.0, < 3.0)
     jekyll-sass-converter (1.5.2)
       sass (~> 3.4)
     jekyll-seo-tag (2.6.1)
@@ -153,8 +157,8 @@ GEM
     jekyll-theme-dinky (0.1.1)
       jekyll (~> 3.5)
       jekyll-seo-tag (~> 2.0)
-    jekyll-theme-hacker (0.1.1)
+    jekyll-theme-hacker (0.1.2)
-      jekyll (~> 3.5)
+      jekyll (> 3.5, < 5.0)
       jekyll-seo-tag (~> 2.0)
     jekyll-theme-leap-day (0.1.1)
       jekyll (~> 3.5)
@@ -188,7 +192,7 @@ GEM
       jekyll (>= 3.3, < 5.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
-    jemoji (0.11.1)
+    jemoji (0.12.0)
       gemoji (~> 3.0)
       html-pipeline (~> 2.2)
       jekyll (>= 3.0, < 5.0)
@@ -197,32 +201,35 @@ GEM
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     liquid (4.0.3)
-    listen (3.2.1)
+    listen (3.4.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
-    mini_portile2 (2.4.0)
+    mini_portile2 (2.5.0)
     minima (2.5.1)
       jekyll (>= 3.5, < 5.0)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
-    minitest (5.14.1)
+    minitest (5.14.3)
     multipart-post (2.1.1)
-    nokogiri (1.10.10)
+    nokogiri (1.11.1)
-      mini_portile2 (~> 2.4.0)
+      mini_portile2 (~> 2.5.0)
-    octokit (4.18.0)
+      racc (~> 1.4)
+    octokit (4.20.0)
       faraday (>= 0.9)
       sawyer (~> 0.8.0, >= 0.5.3)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (3.1.1)
+    racc (1.5.2)
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rexml (3.2.4)
-    rouge (3.19.0)
+    rouge (3.23.0)
     ruby-enum (0.8.0)
       i18n
+    ruby2_keywords (0.0.2)
     rubyzip (2.3.0)
     safe_yaml (1.0.5)
     sass (3.7.4)
@@ -240,19 +247,21 @@ GEM
     thread_safe (0.3.6)
     typhoeus (1.4.0)
       ethon (>= 0.9.0)
-    tzinfo (1.2.7)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.7.7)
     unicode-display_width (1.7.0)
-    zeitwerk (2.4.0)
+    webrick (1.7.0)
+    zeitwerk (2.4.2)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES
-  github-pages (~> 207)
+  github-pages (~> 209)
+  webrick (~> 1.7)
 
 BUNDLED WITH
-   2.1.4
+   2.2.3