Fix Github Actions failure

.github/workflows/php.yml

@@ -2,42 +2,49 @@ name: CI
 
 on:
   push:
-    branches: [ master, develop ]
+    branches: [ develop ]
   pull_request:
-    branches: [ master, develop ]
+    branches: [ develop ]
 
 jobs:
   build:
 
     runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        php-version:
+          - "7.3"
+          - "7.4"
+        dependencies:
+          - "lowest"
+          - "highest"
+    name: Tests with PHP ${{ matrix.php-version }} and ${{ matrix.dependencies }} dependencies
 
     steps:
     - uses: actions/checkout@v2
 
-    - name: Update PHP
-      run: sudo update-alternatives --set php /usr/bin/php7.4
+    - name: Setup PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: ${{ matrix.php-version }}
+      env:
+        COMPOSER_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
     - name: Validate composer
       run: composer validate
 
-    - name: Cache Composer packages
-      id: composer-cache
-      uses: actions/cache@v2
+    - name: Composer install
+      uses: "ramsey/composer-install@v1"
       with:
-        path: vendor
-        key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}
-        restore-keys: |
-          ${{ runner.os }}-php-
-
-    - name: Install dependencies
-      if: steps.composer-cache.outputs.cache-hit != 'true'
-      run: composer install --prefer-source --no-interaction
+        dependency-versions: "${{ matrix.dependencies }}"
+        composer-options: "${{ matrix.composer-options }}"
 
     - name: Run unit tests suite
-      run: php vendor/bin/phpunit --configuration tests/Unit/phpunit.xml.dist
+      run: vendor/bin/phpunit --configuration tests/Unit/phpunit.xml.dist
 
     - name: Run code style suite
-      run: php vendor/bin/phpcs --standard=psr12 src/ --ignore=*.min.css
+      run: vendor/bin/phpcs --standard=psr12 src/ --ignore=*.min.css
 
     - name: Run tests code style
-      run: php vendor/bin/phpcs --standard=psr12 tests/ --ignore=/_files/ -n
+      run: vendor/bin/phpcs --standard=psr12 tests/ --ignore=/_files/ -n

composer.json

@@ -8,7 +8,7 @@
     ],
     "bin": ["bin/svc"],
     "require": {
-        "php": "~7.2.29||~7.3.0||~7.4.0",
+        "php": "~7.3.0||~7.4.0",
         "ext-json": "*",
         "phpstan/phpdoc-parser": "^0.3.5",
         "symfony/console": "~4.1.0||~4.4.0",
@@ -21,7 +21,7 @@
     "require-dev": {
         "phpunit/phpunit": "^6.5.0",
         "ext-dom": "*",
-        "squizlabs/php_codesniffer": "^3.5"
+        "squizlabs/php_codesniffer": "^3.5.1"
     },
     "autoload": {
         "psr-4": {