Update zstd in buck build (#7923)

Summary:
Needed for internal tooling update

Pull Request resolved: https://github.com/facebook/rocksdb/pull/7923

Test Plan: internal tests

Reviewed By: jay-zhuang

Differential Revision: D26203911

Pulled By: pdillinger

fbshipit-source-id: 223824c37e883285cbf041f52902ea60504afe72

TARGETS

@@ -25,7 +25,7 @@ ROCKSDB_EXTERNAL_DEPS = [
     ("zlib", None, "z"),
     ("gflags", None, "gflags"),
     ("lz4", None, "lz4"),
-    ("zstd", None),
+    ("zstd", None, "zstd"),
 ]
 
 ROCKSDB_OS_DEPS = [

buckifier/targets_cfg.py

@@ -32,7 +32,7 @@ ROCKSDB_EXTERNAL_DEPS = [
     ("zlib", None, "z"),
     ("gflags", None, "gflags"),
     ("lz4", None, "lz4"),
-    ("zstd", None),
+    ("zstd", None, "zstd"),
 ]
 
 ROCKSDB_OS_DEPS = [