chore(workflows): cache composer dependencies in tests

Author: dnwjn

.github/workflows/run-tests.yml

@@ -28,6 +28,18 @@ jobs:
         run: |
           composer config github-oauth.github.com ${{ secrets.TOKEN_GITHUB }}
 
+      - name: ✨ Get Composer cache directory
+        id: composer-cache
+        run: echo "dir=$(composer config cache-files-dir)" >> "$GITHUB_OUTPUT"
+
+      - name: 📦 Set up Composer dependency caching
+        uses: actions/cache@v4
+        with:
+          path: ${{ steps.composer-cache.outputs.dir }}
+          key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-composer-
+
       - name: ⬇️Install Composer dependencies
         run: composer validate --no-check-publish && composer install --prefer-dist --no-progress --no-ansi --no-interaction --optimize-autoloader