Upgrade checkout actions to v4 (bis)

Author: PowerKiKi

.github/workflows/main.yml

@@ -13,7 +13,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup PHP, with composer and extensions
         uses: shivammathur/setup-php@v2
@@ -22,7 +22,7 @@ jobs:
           coverage: none
 
       - name: Cache composer dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v3
         with:
           path: ~/.cache/composer
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
@@ -44,7 +44,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup PHP, with composer and extensions
         uses: shivammathur/setup-php@v2
@@ -54,7 +54,7 @@ jobs:
           tools: cs2pr
 
       - name: Cache composer dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v3
         with:
           path: ~/.cache/composer
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
@@ -70,7 +70,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup PHP, with composer and extensions
         uses: shivammathur/setup-php@v2
@@ -79,7 +79,7 @@ jobs:
           coverage: none
 
       - name: Cache composer dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v3
         with:
           path: ~/.cache/composer
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
@@ -95,7 +95,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 2
 
@@ -106,7 +106,7 @@ jobs:
           coverage: pcov
 
       - name: Cache composer dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v3
         with:
           path: ~/.cache/composer
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
@@ -127,7 +127,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name == 'push' && contains(github.ref, 'refs/tags/')
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           ref: ${{ github.ref }} # Otherwise our annotated tag is not fetched and we cannot get correct version