Bump zeitwerk from 2.6.14 to 2.6.15

Bumps [zeitwerk](https://github.com/fxn/zeitwerk) from 2.6.14 to 2.6.15.
- [Changelog](https://github.com/fxn/zeitwerk/blob/main/CHANGELOG.md)
- [Commits](fxn/zeitwerk@v2.6.14...v2.6.15)

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

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

Gemfile.lock

@@ -273,7 +273,7 @@ GEM
     xpath (3.2.0)
       nokogiri (~> 1.8)
     yard (0.9.36)
-    zeitwerk (2.6.14)
+    zeitwerk (2.6.15)
 
 PLATFORMS
   arm64-darwin