Bump drb from 2.2.1 to 2.2.3 in /steep

Bumps [drb](https://github.com/ruby/drb) from 2.2.1 to 2.2.3.
- [Release notes](https://github.com/ruby/drb/releases)
- [Changelog](https://github.com/ruby/drb/blob/master/NEWS.md)
- [Commits](ruby/drb@v2.2.1...v2.2.3)

---
updated-dependencies:
- dependency-name: drb
  dependency-version: 2.2.3
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

steep/Gemfile.lock

@@ -21,7 +21,7 @@ GEM
     concurrent-ruby (1.3.5)
     connection_pool (2.5.3)
     csv (3.3.4)
-    drb (2.2.1)
+    drb (2.2.3)
     ffi (1.17.2)
     fileutils (1.7.3)
     i18n (1.14.7)