Bump actions/checkout to v3

Author: Jeckerson

.github/workflows/ci.yml

@@ -54,7 +54,7 @@ jobs:
           - { php: '8.2', ts: 'nts', arch: 'x64', name: 'windows2019-vs16', os: 'windows-2019', compiler: 'vs16', ccov: 'OFF' }
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Install PHP ${{ matrix.php }}
         uses: shivammathur/setup-php@v2
@@ -178,7 +178,7 @@ jobs:
     runs-on: ubuntu-20.04
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Install PHP
         uses: shivammathur/setup-php@v2
@@ -248,7 +248,7 @@ jobs:
 
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
         with:
           fetch-depth: 1