build(deps): bump zeitwerk from 2.6.7 to 2.6.8

Bumps [zeitwerk](https://github.com/fxn/zeitwerk) from 2.6.7 to 2.6.8.
- [Release notes](https://github.com/fxn/zeitwerk/releases)
- [Changelog](https://github.com/fxn/zeitwerk/blob/main/CHANGELOG.md)
- [Commits](fxn/zeitwerk@v2.6.7...v2.6.8)

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

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

Gemfile.lock

@@ -38,7 +38,7 @@ GEM
     simplecov_json_formatter (0.1.4)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    zeitwerk (2.6.7)
+    zeitwerk (2.6.8)
 
 PLATFORMS
   ruby