github-actions: bump oras-project/setup-oras from 1 to 2 (#607)

Author: dependabot[bot]

.github/workflows/docker-riverproui.yaml

@@ -154,7 +154,7 @@ jobs:
         uses: docker/setup-buildx-action@v4
 
       - name: Set up ORAS CLI
-        uses: oras-project/setup-oras@v1
+        uses: oras-project/setup-oras@v2
 
       - name: Install Cosign
         uses: sigstore/cosign-installer@v3
@@ -442,7 +442,7 @@ jobs:
         uses: imjasonh/setup-crane@v0.6
 
       - name: Set up ORAS CLI
-        uses: oras-project/setup-oras@v1
+        uses: oras-project/setup-oras@v2
 
       - name: Install Cosign
         uses: sigstore/cosign-installer@v3