chore(deps): update oras-project/setup-oras action to v2

.gitea/workflows/helm.yaml

@@ -17,7 +17,7 @@ jobs:
     - uses: actions/checkout@v6.0.2
     - uses: azure/setup-helm@v5.0.0
       with:
-        version: "v4.1.4" # renovate: datasource=github-tags depName=helm/helm
+        version: "v4.0.1" # renovate: datasource=github-tags depName=helm/helm
     - name: Lint helm files
       run: |
         helm lint --values values.yaml .
@@ -28,7 +28,7 @@ jobs:
     - uses: actions/checkout@v6.0.2
     - uses: azure/setup-helm@v5.0.0
       with:
-        version: "v4.1.4" # renovate: datasource=github-tags depName=helm/helm
+        version: "v4.0.1" # renovate: datasource=github-tags depName=helm/helm
     - env:
         HELM_UNITTEST_VERSION: v1.0.0 #renovate: datasource=github-releases depName=helm-unittest/helm-unittest
       name: Install helm-unittest

.gitea/workflows/release.yaml

@@ -16,11 +16,11 @@ jobs:
     steps:
       - uses: sigstore/cosign-installer@v4.1.1
         with:
-          cosign-release: "v3.0.6" # renovate: datasource=github-tags depName=sigstore/cosign
+          cosign-release: "v2.6.3" # renovate: datasource=github-tags depName=sigstore/cosign
 
       - uses: azure/setup-helm@v5.0.0
         with:
-          version: "v4.1.4" # renovate: datasource=github-tags depName=helm/helm
+          version: "v4.0.1" # renovate: datasource=github-tags depName=helm/helm
 
       - name: Install helm plugins
         env: