chore: Pin dependencies (#364)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Martin Georgiev <martin-georgiev@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/integration-tests.yml

@@ -60,10 +60,10 @@ jobs:
           -e POSTGRES_INITDB_ARGS="--data-checksums"
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
 
       - name: Set up PHP
-        uses: shivammathur/setup-php@v2
+        uses: shivammathur/setup-php@cf4cade2721270509d5b1c766ab3549210a39a2a # v2
         with:
           php-version: ${{ matrix.php }}
           coverage: xdebug
@@ -75,7 +75,7 @@ jobs:
 
       - name: Cache Composer packages
         id: composer-cache
-        uses: actions/cache@v4
+        uses: actions/cache@5a3ec84eff668545956fd18022155c47e93e2684 # v4
         with:
           path: vendor
           key: ${{ runner.os }}-php-${{ hashFiles('**/composer.lock') }}