Bump nio4r from 2.6.0 to 2.6.1

Bumps [nio4r](https://github.com/socketry/nio4r) from 2.6.0 to 2.6.1.
- [Changelog](https://github.com/socketry/nio4r/blob/main/changes.md)
- [Commits](socketry/nio4r@v2.6.0...v2.6.1)

---
updated-dependencies:
- dependency-name: nio4r
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile.lock

@@ -121,7 +121,7 @@ GEM
     multi_json (1.15.0)
     multipart-post (2.3.0)
     nenv (0.3.0)
-    nio4r (2.6.0)
+    nio4r (2.6.1)
     notiffany (0.1.3)
       nenv (~> 0.1)
       shellany (~> 0.0)