Bump tzinfo-data from 1.2023.3 to 1.2023.4 in /spec/fixtures/test_site

Bumps [tzinfo-data](https://github.com/tzinfo/tzinfo-data) from 1.2023.3 to 1.2023.4.
- [Release notes](https://github.com/tzinfo/tzinfo-data/releases)
- [Commits](tzinfo/tzinfo-data@v1.2023.3...v1.2023.4)

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

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

spec/fixtures/test_site/Gemfile.lock

@@ -79,7 +79,7 @@ GEM
       unicode-display_width (>= 1.1.1, < 3)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    tzinfo-data (1.2023.3)
+    tzinfo-data (1.2023.4)
       tzinfo (>= 1.0.0)
     unicode-display_width (2.4.2)
     wdm (0.1.1)