Bump drb from 2.2.1 to 2.2.3

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]

Gemfile.lock

@@ -39,7 +39,7 @@ GEM
     dbm (1.1.0)
     diff-lcs (1.6.2)
     digest (3.2.0)
-    drb (2.2.1)
+    drb (2.2.3)
     erb (5.0.1)
     extconf_compile_commands_json (0.0.7)
     ffi (1.17.2)