Bump zeitwerk from 2.4.2 to 2.6.18

Bumps [zeitwerk](https://github.com/fxn/zeitwerk) from 2.4.2 to 2.6.18.
- [Changelog](https://github.com/fxn/zeitwerk/blob/main/CHANGELOG.md)
- [Commits](fxn/zeitwerk@v2.4.2...v2.6.18)

---
updated-dependencies:
- dependency-name: zeitwerk
  dependency-version: 2.6.18
  dependency-type: indirect
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -91,7 +91,7 @@ GEM
       xcpretty (~> 0.2)
     xcpretty-travis-formatter (1.0.1)
       xcpretty (~> 0.2, >= 0.0.7)
-    zeitwerk (2.4.2)
+    zeitwerk (2.6.18)
 
 PLATFORMS
   ruby