chore(deps): pin dependencies (#819)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
diff --git a/.github/workflows/manila.yml b/.github/workflows/manila.yml
index f5fbc45..2e3bcfa 100644
--- a/.github/workflows/manila.yml
+++ b/.github/workflows/manila.yml
@@ -33,7 +33,7 @@
     runs-on: ubuntu-latest
     steps:
       - name: Checkout project
-        uses: actions/checkout@v4
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
         with:
           fetch-depth: 0
 
@@ -48,13 +48,13 @@
           poetry self add "poetry-dynamic-versioning[plugin]"
 
       - name: Clone openstack/manila-image-elements
-        uses: actions/checkout@v4
+        uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4
         with:
           repository: openstack/manila-image-elements
           path: manila-image-elements
 
       - name: Cache DIB_IMAGE_CACHE
-        uses: actions/cache@v3
+        uses: actions/cache@704facf57e6136b1bc63b828d79edcd491f0ee84 # v3
         with:
           path: ~/.cache/image-create
           key: dib-image-cache