Update input_buffer requirement from 0.4.0 to 0.5.0

Updates the requirements on [input_buffer](https://github.com/snapview/input_buffer) to permit the latest version.
- [Release notes](https://github.com/snapview/input_buffer/releases)
- [Commits](https://github.com/snapview/input_buffer/compare/v0.4.0...v0.5.0)

---
updated-dependencies:
- dependency-name: input_buffer
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Cargo.toml

@@ -27,7 +27,7 @@ byteorder = "1.3.2"
 bytes = "1.0"
 http = "0.2"
 httparse = "1.3.4"
-input_buffer = "0.4.0"
+input_buffer = "0.5.0"
 log = "0.4.8"
 rand = "0.8.0"
 sha-1 = "0.9"