Upgrade GitHub actions

Author: sagikazarmark

.github/workflows/checks.yml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2
 
       - name: Install
         uses: docker://composer
@@ -31,7 +31,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2
 
       - name: Roave BC Check
         uses: docker://nyholm/roave-bc-check-ga

.github/workflows/ci.yml

@@ -13,17 +13,18 @@ jobs:
 
     steps:
       - name: Set up PHP
-        uses: shivammathur/setup-php@1.6.2
+        uses: shivammathur/setup-php@1.7.0
         with:
           php-version: '7.1'
           coverage: xdebug
           extensions: mbstring
+          tools: prestissimo
 
       - name: Setup Problem Matchers for PHPUnit
         run: echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
 
       - name: Checkout code
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2
 
       - name: Download dependencies
         run: composer update --prefer-stable --prefer-dist --no-interaction --no-progress --no-suggest --prefer-lowest
@@ -41,16 +42,17 @@ jobs:
 
     steps:
       - name: Set up PHP
-        uses: shivammathur/setup-php@1.6.2
+        uses: shivammathur/setup-php@1.7.0
         with:
           php-version: ${{ matrix.php }}
           extensions: mbstring
+          tools: prestissimo
 
       - name: Setup Problem Matchers for PHPUnit
         run: echo "::add-matcher::${{ runner.tool_cache }}/phpunit.json"
 
       - name: Checkout code
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2
 
       - name: Download dependencies
         run: composer update --prefer-stable --prefer-dist --no-interaction --no-progress --no-suggest

.github/workflows/static.yml

@@ -10,10 +10,10 @@ jobs:
   phpstan:
     name: PHPStan
     runs-on: ubuntu-latest
-    
+
     steps:
       - name: Checkout code
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2
 
       - name: PHPStan
         uses: docker://oskarstark/phpstan-ga
@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2
 
       - name: PHP-CS-Fixer
         uses: docker://oskarstark/php-cs-fixer-ga