⬆️ Bump zeitwerk from 2.6.17 to 2.6.18 in /builder (#2429)

Bumps [zeitwerk](https://github.com/fxn/zeitwerk) from 2.6.17 to 2.6.18.
- [Changelog](https://github.com/fxn/zeitwerk/blob/main/CHANGELOG.md)
- [Commits](fxn/zeitwerk@v2.6.17...v2.6.18)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

builder/Gemfile.lock

@@ -305,7 +305,7 @@ GEM
     websocket-driver (0.7.6)
       websocket-extensions (>= 0.1.0)
     websocket-extensions (0.1.5)
-    zeitwerk (2.6.17)
+    zeitwerk (2.6.18)
 
 PLATFORMS
   aarch64-linux-musl