ci: do not use deprecated actions/cache (#218)

.github/workflows/test.yml

@@ -1,9 +1,5 @@
 name: Test
 
-env:
-  COMPOSER_VERSION: "2"
-  COMPOSER_CACHE: "${{ github.workspace }}/.composer-cache"
-
 on:
   push:
     branches:
@@ -20,7 +16,7 @@ jobs:
 
     steps:
     - name: Checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Start MySQL
       run: sudo systemctl start mysql.service
@@ -37,27 +33,14 @@ jobs:
       with:
         elasticsearch version: '7.5.0'
 
-    - name: Set standard 10up cache directories
-      run: |
-        composer config -g cache-dir "${{ env.COMPOSER_CACHE }}"
-
-    - name: Prepare composer cache
-      uses: actions/cache@v2
-      with:
-        path: ${{ env.COMPOSER_CACHE }}
-        key: composer-${{ env.COMPOSER_VERSION }}-${{ hashFiles('**/composer.lock') }}
-        restore-keys: |
-          composer-${{ env.COMPOSER_VERSION }}-
-
     - name: Set PHP version
       uses: shivammathur/setup-php@v2
       with:
         php-version: '8.2'
         coverage: none
-        tools: composer:v1
 
-    - name: Install dependencies
-      run: composer install
+    - name: Install PHP Dependencies
+      uses: ramsey/composer-install@3.0.0
 
     - name: Setup WP Tests
       run: |