Bump sprockets from 3.7.2 to 3.7.3 (#191)

Bumps [sprockets](https://github.com/rails/sprockets) from 3.7.2 to 3.7.3.
- [Release notes](https://github.com/rails/sprockets/releases)
- [Changelog](https://github.com/rails/sprockets/blob/v3.7.3/CHANGELOG.md)
- [Commits](rails/sprockets@v3.7.2...v3.7.3)

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

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

Gemfile

@@ -13,5 +13,5 @@ gem 'nokogiri', '~> 1.16.3'
 gem 'haml', '>= 4.0.5', '< 6.0'
 # Lock sprockets/sass, newer version (4.0.0) uses sassc which leads to an error:
 # "Error: File to import not found or unreadable: normalize."
-gem 'sprockets', '= 3.7.2'
+gem 'sprockets', '= 3.7.3'
 gem 'sass', '3.7.4'

Gemfile.lock

@@ -11,6 +11,7 @@ GEM
     autoprefixer-rails (10.4.13.0)
       execjs (~> 2)
     backports (3.24.1)
+    base64 (0.2.0)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
@@ -91,7 +92,7 @@ GEM
     parslet (2.0.0)
     public_suffix (5.0.4)
     racc (1.7.3)
-    rack (2.2.8.1)
+    rack (2.2.9)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -106,7 +107,8 @@ GEM
     sassc (2.4.0)
       ffi (~> 1.9)
     servolux (0.13.0)
-    sprockets (3.7.2)
+    sprockets (3.7.3)
+      base64
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
     temple (0.10.3)
@@ -133,7 +135,7 @@ DEPENDENCIES
   redcarpet (~> 3.6.0)
   rouge (~> 3.30.0)
   sass (= 3.7.4)
-  sprockets (= 3.7.2)
+  sprockets (= 3.7.3)
 
 RUBY VERSION
    ruby 3.2.2p53