Update githook.yml

Author: digitlimit

.github/workflows/githook.yml

@@ -35,6 +35,9 @@ jobs:
     - name: Validate composer.json and composer.lock
       run: composer validate --strict
 
+    - name: Install dependencies
+      run: composer install --prefer-dist --no-progress
+
     - name: Run tests
       env:
         DB_CONNECTION: sqlite