Bump importmap-rails from 1.2.3 to 2.1.0

Bumps [importmap-rails](https://github.com/rails/importmap-rails) from 1.2.3 to 2.1.0.
- [Release notes](https://github.com/rails/importmap-rails/releases)
- [Commits](rails/importmap-rails@v1.2.3...v2.1.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile.lock

@@ -155,7 +155,7 @@ GEM
       dotenv (= 3.1.0)
       railties (>= 6.1)
     double-bag-ftps (0.1.4)
-    erubi (1.13.0)
+    erubi (1.13.1)
     execjs (2.10.0)
     fabrication (2.31.0)
     faker (3.2.3)
@@ -191,7 +191,7 @@ GEM
     image_processing (1.12.2)
       mini_magick (>= 4.9.5, < 5)
       ruby-vips (>= 2.0.17, < 3)
-    importmap-rails (1.2.3)
+    importmap-rails (2.1.0)
       actionpack (>= 6.0.0)
       activesupport (>= 6.0.0)
       railties (>= 6.0.0)
@@ -229,7 +229,7 @@ GEM
     mini_magick (4.12.0)
     mini_mime (1.1.5)
     mini_portile2 (2.8.8)
-    minitest (5.25.1)
+    minitest (5.25.4)
     msgpack (1.7.2)
     multi_json (1.15.0)
     multi_xml (0.6.0)