Remove PHP < 7.4, upgrade actions

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-versions: ['7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
+        php-versions: ['7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
         os: [ubuntu-latest, windows-latest]
 
     steps:
@@ -24,7 +24,7 @@ jobs:
       run: git config --system core.autocrlf false; git config --system core.eol lf
 
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set up PHP ${{ matrix.php-versions }}
       uses: shivammathur/setup-php@v2
@@ -40,7 +40,7 @@ jobs:
       run: echo "::set-output name=dir::$(composer config cache-files-dir)"
 
     - name: Cache dependencies
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ${{ steps.composer-cache.outputs.dir }}
         key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}