Upgrade to v2 of the cache action

Author: greg0ire

.github/workflows/continuous-integration.yml

@@ -32,7 +32,7 @@ jobs:
           php-version: "${{ matrix.php-version }}"
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1.0.3"
+        uses: "actions/cache@v2"
         with:
           path: "~/.composer/cache"
           key: "php-${{ matrix.php-version }}-composer-${{ hashFiles('composer.json') }}"
@@ -65,7 +65,7 @@ jobs:
           php-version: "${{ matrix.php-version }}"
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1.0.3"
+        uses: "actions/cache@v2"
         with:
           path: "~/.composer/cache"
           key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('composer.json') }}"
@@ -105,7 +105,7 @@ jobs:
           php-version: "${{ matrix.php-version }}"
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1.0.3"
+        uses: "actions/cache@v2"
         with:
           path: "~/.composer/cache"
           key: "php-${{ matrix.php-version }}-composer-${{ hashFiles('composer.json') }}"
@@ -139,7 +139,7 @@ jobs:
           php-version: "${{ matrix.php-version }}"
 
       - name: "Cache dependencies installed with composer"
-        uses: "actions/cache@v1.0.3"
+        uses: "actions/cache@v2"
         with:
           path: "~/.composer/cache"
           key: "php-${{ matrix.php-version }}-composer-${{ matrix.dependencies }}-${{ hashFiles('composer.json') }}"