Bump rbs from 3.4.4 to 3.5.0 in /steep

Bumps [rbs](https://github.com/ruby/rbs) from 3.4.4 to 3.5.0.
- [Release notes](https://github.com/ruby/rbs/releases)
- [Changelog](https://github.com/ruby/rbs/blob/master/CHANGELOG.md)
- [Commits](v3.4.4...v3.5.0)

---
updated-dependencies:
- dependency-name: rbs
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

steep/Gemfile.lock

@@ -1,7 +1,6 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    abbrev (0.1.2)
     activesupport (7.1.3.4)
       base64
       bigdecimal
@@ -39,8 +38,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rbs (3.4.4)
-      abbrev
+    rbs (3.5.0)
     securerandom (0.3.1)
     steep (1.6.0)
       activesupport (>= 5.1)