Bump actions/cache from 2.1.6 to 3.0.8

.github/workflows/coding-standards.yml

@@ -84,7 +84,7 @@ jobs:
         run: echo "::set-output name=date::$(/bin/date -u --date='last Mon' "+%F")"
 
       - name: Cache PHPCS scan cache
-        uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
+        uses: actions/cache@fd5de65bc895cf536527842281bea11763fefd77 # v2.1.6
         with:
           path: .cache/phpcs.json
           key: ${{ runner.os }}-date-${{ steps.get-date.outputs.date }}-phpcs-cache-${{ hashFiles('**/composer.json', 'phpcs.xml.dist') }}

.github/workflows/php-compatibility.yml

@@ -78,7 +78,7 @@ jobs:
         run: echo "::set-output name=date::$(/bin/date -u --date='last Mon' "+%F")"
 
       - name: Cache PHP compatibility scan cache
-        uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
+        uses: actions/cache@fd5de65bc895cf536527842281bea11763fefd77 # v2.1.6
         with:
           path: .cache/phpcompat.json
           key: ${{ runner.os }}-date-${{ steps.get-date.outputs.date }}-phpcompat-cache-${{ hashFiles('**/composer.json', 'phpcompat.xml.dist') }}

.github/workflows/phpunit-tests.yml

@@ -132,7 +132,7 @@ jobs:
         run: echo "::set-output name=dir::$(composer config cache-files-dir)"
 
       - name: Cache Composer dependencies
-        uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
+        uses: actions/cache@fd5de65bc895cf536527842281bea11763fefd77 # v2.1.6
         env:
           cache-name: cache-composer-dependencies
         with:

.github/workflows/test-coverage.yml

@@ -96,7 +96,7 @@ jobs:
         run: echo "::set-output name=dir::$(composer config cache-files-dir)"
 
       - name: Cache Composer dependencies
-        uses: actions/cache@c64c572235d810460d0d6876e9c705ad5002b353 # v2.1.6
+        uses: actions/cache@fd5de65bc895cf536527842281bea11763fefd77 # v2.1.6
         env:
           cache-name: cache-composer-dependencies
         with: