Bump sorbet-runtime from 0.5.12219 to 0.5.12220 in /steep

Bumps [sorbet-runtime](https://github.com/sorbet/sorbet) from 0.5.12219 to 0.5.12220.
- [Release notes](https://github.com/sorbet/sorbet/releases)
- [Commits](https://github.com/sorbet/sorbet/commits)

---
updated-dependencies:
- dependency-name: sorbet-runtime
  dependency-version: 0.5.12220
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

steep/Gemfile.lock

@@ -52,7 +52,7 @@ GEM
       rbs (>= 3, < 5)
       sorbet-runtime (>= 0.5.10782)
     securerandom (0.4.1)
-    sorbet-runtime (0.5.12219)
+    sorbet-runtime (0.5.12220)
     steep (1.10.0)
       activesupport (>= 5.1)
       concurrent-ruby (>= 1.1.10)