Remove PHP 7.4 support

.github/workflows/run-tests.yml

@@ -8,8 +8,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [macos-latest, ubuntu-latest, windows-latest]
-        php: [7.4, 8.0, 8.1]
+        os: [macos-latest, ubuntu-latest]
+        php: [8.0, 8.1]
         stability: [prefer-stable]
 
     name: P${{ matrix.php }} - ${{ matrix.stability }} - ${{ matrix.os }}