Bump rdoc from 6.4.0 to 6.5.0 (#2649)

Bumps [rdoc](https://github.com/ruby/rdoc) from 6.4.0 to 6.5.0.
- [Release notes](https://github.com/ruby/rdoc/releases)
- [Changelog](https://github.com/ruby/rdoc/blob/master/History.rdoc)
- [Commits](https://github.com/ruby/rdoc/compare/v6.4.0...v6.5.0)

---
updated-dependencies:
- dependency-name: rdoc
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

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

Gemfile.lock

@@ -124,7 +124,7 @@ GEM
     pry-byebug (3.10.1)
       byebug (~> 11.0)
       pry (>= 0.13, < 0.15)
-    psych (4.0.6)
+    psych (5.0.0)
       stringio
     public_suffix (5.0.0)
     qr4r (0.6.1)
@@ -138,7 +138,7 @@ GEM
       rack (>= 1.3)
     rainbow (3.1.1)
     rake (13.0.6)
-    rdoc (6.4.0)
+    rdoc (6.5.0)
       psych (>= 4.0.0)
     regexp_parser (2.6.0)
     reline (0.3.1)