Bump ruby-lsp from 0.23.20 to 0.23.21 in /steep

Bumps [ruby-lsp](https://github.com/Shopify/ruby-lsp) from 0.23.20 to 0.23.21.
- [Release notes](https://github.com/Shopify/ruby-lsp/releases)
- [Commits](Shopify/ruby-lsp@v0.23.20...v0.23.21)

---
updated-dependencies:
- dependency-name: ruby-lsp
  dependency-version: 0.23.21
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

steep/Gemfile.lock

@@ -46,13 +46,13 @@ GEM
       ffi (~> 1.0)
     rbs (3.9.4)
       logger
-    ruby-lsp (0.23.20)
+    ruby-lsp (0.23.21)
       language_server-protocol (~> 3.17.0)
       prism (>= 1.2, < 2.0)
       rbs (>= 3, < 4)
       sorbet-runtime (>= 0.5.10782)
     securerandom (0.4.1)
-    sorbet-runtime (0.5.12117)
+    sorbet-runtime (0.5.12119)
     steep (1.10.0)
       activesupport (>= 5.1)
       concurrent-ruby (>= 1.1.10)