Bump zeitwerk from 2.6.15 to 2.6.16

Bumps [zeitwerk](https://github.com/fxn/zeitwerk) from 2.6.15 to 2.6.16.
- [Changelog](https://github.com/fxn/zeitwerk/blob/main/CHANGELOG.md)
- [Commits](fxn/zeitwerk@v2.6.15...v2.6.16)

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

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

Gemfile.lock

@@ -102,11 +102,12 @@ GEM
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.5.0)
-    zeitwerk (2.6.15)
+    zeitwerk (2.6.16)
 
 PLATFORMS
   arm64-darwin-22
   arm64-darwin-23
+  x86_64-linux
 
 DEPENDENCIES
   rspec