remove head test run

Author: Christian Kruse

.github/workflows/main.yml

@@ -6,12 +6,12 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest]
-        ruby: [3.0, 3.1, 3.2, 3.3, 3.4, head]
+        ruby: [3.0, 3.1, 3.2, 3.3, 3.4]
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v2
-    - uses: ruby/setup-ruby@v1
-      with:
-        ruby-version: ${{ matrix.ruby }}
-        bundler-cache: true # runs 'bundle install' and caches installed gems automatically
-    - run: bundle exec rake test
+      - uses: actions/checkout@v2
+      - uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: ${{ matrix.ruby }}
+          bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+      - run: bundle exec rake test