Bump importmap-rails from 2.2.2 to 2.2.3

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>

Author: dependabot[bot]

Gemfile.lock

@@ -232,7 +232,7 @@ GEM
     image_processing (1.14.0)
       mini_magick (>= 4.9.5, < 6)
       ruby-vips (>= 2.0.17, < 3)
-    importmap-rails (2.2.2)
+    importmap-rails (2.2.3)
       actionpack (>= 6.0.0)
       activesupport (>= 6.0.0)
       railties (>= 6.0.0)