Update GitHub actions to run on node 20

Author: PowerKiKi

.github/workflows/main.yml

@@ -22,7 +22,7 @@ jobs:
           coverage: none
 
       - name: Cache composer dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.cache/composer
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
@@ -54,7 +54,7 @@ jobs:
           tools: cs2pr
 
       - name: Cache composer dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.cache/composer
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
@@ -79,7 +79,7 @@ jobs:
           coverage: none
 
       - name: Cache composer dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.cache/composer
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
@@ -106,7 +106,7 @@ jobs:
           coverage: pcov
 
       - name: Cache composer dependencies
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ~/.cache/composer
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}