Bump importmap-rails from 2.2.2 to 2.2.3 (#5491)

Bumps [importmap-rails](https://github.com/rails/importmap-rails) from 2.2.2 to 2.2.3.
- [Release notes](https://github.com/rails/importmap-rails/releases)
- [Commits](rails/importmap-rails@v2.2.2...v2.2.3)

---
updated-dependencies:
- dependency-name: importmap-rails
  dependency-version: 2.2.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -329,7 +329,7 @@ GEM
       ostruct
     ice_cube (0.17.0)
     ice_nine (0.11.2)
-    importmap-rails (2.2.2)
+    importmap-rails (2.2.3)
       actionpack (>= 6.0.0)
       activesupport (>= 6.0.0)
       railties (>= 6.0.0)