Update GitHub Actions to latest version

.github/dependabot.yml

@@ -0,0 +1,6 @@
+version: 2
+updates:
+- package-ecosystem: "github-actions"
+  directory: "/"
+  schedule:
+    interval: monthly

.github/workflows/php.yml

@@ -12,18 +12,18 @@ on:
 
 jobs:
   lint:
-    name: Static analysis for php ${{ matrix.php }} on ${{ matrix.os }}
+    name: Lint and Code Style
     runs-on: ${{ matrix.os }}
 
     strategy:
       fail-fast: false
       matrix:
-        php: ['8.0', '8.1', '8.2']
+        php: ['8.2', '8.3']
         os: ['ubuntu-latest']
 
     steps:
       - name: Checkout code base
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
@@ -42,6 +42,26 @@ jobs:
         if: success() || matrix.allow_failure
         run: phpcs -wps --colors
 
+  test:
+    name: Unittest
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        php: ['8.2', '8.3']
+        os: ['ubuntu-latest']
+
+    steps:
+      - name: Checkout code base
+        uses: actions/checkout@v4
+
+      - name: Setup PHP
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php }}
+          tools: 'phpunit:10.4'
+
       - name: Setup Libraries
         run: |
           mkdir -p _libraries
@@ -54,4 +74,4 @@ jobs:
       - name: PHPUnit
         env:
           ICINGAWEB_LIBDIR:  _libraries/
-        run: phpunit --verbose
+        run: phpunit