build(deps): bump pp from 0.6.3 to 0.6.4 (#5224)

Bumps [pp](https://github.com/ruby/pp) from 0.6.3 to 0.6.4.
- [Release notes](https://github.com/ruby/pp/releases)
- [Commits](ruby/pp@v0.6.3...v0.6.4)

---
updated-dependencies:
- dependency-name: pp
  dependency-version: 0.6.4
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -285,7 +285,7 @@ GEM
     pg (1.6.3)
     pg (1.6.3-x86_64-darwin)
     pg (1.6.3-x86_64-linux)
-    pp (0.6.3)
+    pp (0.6.4)
       prettyprint
     prettyprint (0.2.0)
     prism (1.9.0)