Bump rake-compiler from 1.2.8 to 1.2.9

Bumps [rake-compiler](https://github.com/luislavena/rake-compiler) from 1.2.8 to 1.2.9.
- [Release notes](https://github.com/luislavena/rake-compiler/releases)
- [Changelog](https://github.com/rake-compiler/rake-compiler/blob/master/History.md)
- [Commits](rake-compiler/rake-compiler@v1.2.8...v1.2.9)

---
updated-dependencies:
- dependency-name: rake-compiler
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -24,7 +24,7 @@ GEM
     racc (1.8.1)
     rainbow (3.1.1)
     rake (13.2.1)
-    rake-compiler (1.2.8)
+    rake-compiler (1.2.9)
       rake
     regexp_parser (2.10.0)
     rspec-core (3.13.2)