[BUGFIX] Set older PHP version not supported in ubuntu-latest image

Author: andreaskienast

.github/workflows/ci.yml

@@ -10,15 +10,24 @@ jobs:
       fail-fast: false
       matrix:
         typo3: [^10.4, dev-master]
-        php: ['7.2', '7.3', '7.4']
+        php: ['7.4']
+        include:
+          - typo3: ^10.4
+            php: '7.4'
+          - typo3: ^10.4
+            php: '7.3'
+          - typo3: ^10.4
+            php: '7.2'
+          - typo3: dev-master
+            php: '7.4'
 
     steps:
     - uses: actions/checkout@v2
 
-    - name: Set up PHP Version
-      run: |
-        sudo update-alternatives --set php /usr/bin/php${{ matrix.php }}
-        php -v
+    - name: Setup PHP ${{ matrix.php }}
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: ${{ matrix.php }}
 
     - name: Update Composer
       run: |