Build(deps): Bump base64 from 0.1.1 to 0.2.0 (#24285)

Bumps [base64](https://github.com/ruby/base64) from 0.1.1 to 0.2.0.
- [Release notes](https://github.com/ruby/base64/releases)
- [Commits](https://github.com/ruby/base64/compare/v0.1.1...v0.2.0)

---
updated-dependencies:
- dependency-name: base64
  dependency-type: indirect
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -82,7 +82,7 @@ GEM
       aws-sigv4 (~> 1.1)
     aws-sigv4 (1.5.0)
       aws-eventstream (~> 1, >= 1.0.2)
-    base64 (0.1.1)
+    base64 (0.2.0)
     better_errors (2.10.1)
       erubi (>= 1.0.0)
       rack (>= 0.9.0)