Bump cgi from 0.5.0 to 0.5.1

Bumps [cgi](https://github.com/ruby/cgi) from 0.5.0 to 0.5.1.
- [Release notes](https://github.com/ruby/cgi/releases)
- [Commits](ruby/cgi@v0.5.0...v0.5.1)

---
updated-dependencies:
- dependency-name: cgi
  dependency-version: 0.5.1
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -11,8 +11,8 @@ GEM
     base64 (0.3.0)
     benchmark (0.5.0)
     benchmark-ips (2.14.0)
-    cgi (0.5.0)
-    cgi (0.5.0-java)
+    cgi (0.5.1)
+    cgi (0.5.1-java)
     connection_pool (2.5.5)
     hiredis (0.6.3)
     hiredis (0.6.3-java)