Bump slimmer from 16.0.0 to 16.0.1

Bumps [slimmer](https://github.com/alphagov/slimmer) from 16.0.0 to 16.0.1.
- [Release notes](https://github.com/alphagov/slimmer/releases)
- [Changelog](https://github.com/alphagov/slimmer/blob/master/CHANGELOG.md)
- [Commits](alphagov/slimmer@v16.0.0...v16.0.1)

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

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

Gemfile.lock

@@ -333,7 +333,7 @@ GEM
       docile (~> 1.1)
       simplecov-html (~> 0.11)
     simplecov-html (0.12.3)
-    slimmer (16.0.0)
+    slimmer (16.0.1)
       activesupport
       json
       nokogiri (~> 1.7)
@@ -389,7 +389,7 @@ GEM
       thor
     xpath (3.2.0)
       nokogiri (~> 1.8)
-    zeitwerk (2.5.3)
+    zeitwerk (2.5.4)
 
 PLATFORMS
   ruby