Bump actions/checkout to v3 [skip ci]

Author: shivammathur

.github/workflows/cache.yml

@@ -9,7 +9,7 @@ jobs:
         php: ['5.3', '5.4', '5.5', '5.6', '7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1']
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Create artifact directory
         run: mkdir builds
       - name: Fetch files

.github/workflows/php80.yml

@@ -31,7 +31,7 @@ jobs:
     name: Build PHP
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install PHP
         uses: shivammathur/setup-php@develop
         with:
@@ -101,7 +101,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: build
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - run: mkdir builds
       - uses: actions/download-artifact@v2
         with:

.github/workflows/php81.yml

@@ -31,7 +31,7 @@ jobs:
     name: Build PHP
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install PHP
         uses: shivammathur/setup-php@develop
         with:
@@ -109,7 +109,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: build
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - run: mkdir builds
       - uses: actions/download-artifact@v2
         with:

.github/workflows/phpmaster.yml

@@ -31,7 +31,7 @@ jobs:
     name: Build PHP
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install PHP
         uses: shivammathur/setup-php@develop
         with:
@@ -112,7 +112,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: build
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - run: mkdir builds
       - uses: actions/download-artifact@v2
         with: