Bump rbs from 3.7.0.dev.1 to 3.7.0 in /gemfile_steep

Bumps [rbs](https://github.com/ruby/rbs) from 3.7.0.dev.1 to 3.7.0.
- [Release notes](https://github.com/ruby/rbs/releases)
- [Changelog](https://github.com/ruby/rbs/blob/master/CHANGELOG.md)
- [Commits](ruby/rbs@v3.7.0.dev.1...v3.7.0)

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

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

gemfile_steep/Gemfile.lock

@@ -43,7 +43,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rbs (3.7.0.dev.1)
+    rbs (3.7.0)
       logger
     rbs-inline (0.10.0)
       prism (>= 0.29, < 1.3)