update Github Actions to use commit hashes for 3rd party actions instead of version tags

Signed-off-by: Simon L. <szaimen@e.mail.de>

.github/workflows/helm-release.yml

@@ -16,7 +16,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Turnstyle
-        uses: softprops/turnstyle@v2
+        uses: softprops/turnstyle@25dcee5c3fcb84375f3a3f93a3c97ed0d42cfcdc # v2
         with:
           continue-after-seconds: 180
         env:
@@ -32,7 +32,7 @@ jobs:
 
       # See https://github.com/helm/chart-releaser-action/issues/6
       - name: Set up Helm
-        uses: azure/setup-helm@v4
+        uses: azure/setup-helm@b9e51907a09c216f16ebe8536097933489208112 # v4
         with:
           version: v3.6.3
 
@@ -41,7 +41,7 @@ jobs:
           helm lint ./nextcloud-aio-helm-chart
 
       - name: Run chart-releaser
-        uses: helm/chart-releaser-action@v1.7.0
+        uses: helm/chart-releaser-action@cae68fefc6b5f367a0275617c9f83181ba54714f # v1.7.0
         with:
           mark_as_latest: false
           charts_dir: .