Bump importmap-rails from 1.2.1 to 1.2.3

Bumps [importmap-rails](https://github.com/rails/importmap-rails) from 1.2.1 to 1.2.3.
- [Release notes](https://github.com/rails/importmap-rails/releases)
- [Commits](rails/importmap-rails@v1.2.1...v1.2.3)

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

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

Gemfile.lock

@@ -115,11 +115,12 @@ GEM
       racc (~> 1.4)
     i18n (1.14.1)
       concurrent-ruby (~> 1.0)
-    importmap-rails (1.2.1)
+    importmap-rails (1.2.3)
       actionpack (>= 6.0.0)
+      activesupport (>= 6.0.0)
       railties (>= 6.0.0)
     io-console (0.6.0)
-    irb (1.8.1)
+    irb (1.8.3)
       rdoc
       reline (>= 0.3.8)
     jbuilder (2.11.5)
@@ -161,12 +162,12 @@ GEM
     parser (3.2.2.4)
       ast (~> 2.4.1)
       racc
-    psych (5.1.1)
+    psych (5.1.1.1)
       stringio
     public_suffix (5.0.3)
     puma (6.4.0)
       nio4r (~> 2.0)
-    racc (1.7.1)
+    racc (1.7.2)
     rack (3.0.8)
     rack-session (2.0.0)
       rack (>= 3.0.0)
@@ -205,7 +206,7 @@ GEM
       thor (~> 1.0, >= 1.2.2)
       zeitwerk (~> 2.6)
     rainbow (3.1.1)
-    rake (13.0.6)
+    rake (13.1.0)
     rdoc (6.5.0)
       psych (>= 4.0.0)
     regexp_parser (2.8.2)
@@ -259,7 +260,7 @@ GEM
     stimulus-rails (1.3.0)
       railties (>= 6.0.0)
     stringio (3.0.8)
-    thor (1.2.2)
+    thor (1.3.0)
     timeout (0.4.0)
     turbo-rails (1.5.0)
       actionpack (>= 6.0.0)