github-actions: bump imjasonh/setup-crane from 0.4 to 0.6

Bumps [imjasonh/setup-crane](https://github.com/imjasonh/setup-crane) from 0.4 to 0.6.
- [Release notes](https://github.com/imjasonh/setup-crane/releases)
- [Commits](imjasonh/setup-crane@v0.4...v0.6)

---
updated-dependencies:
- dependency-name: imjasonh/setup-crane
  dependency-version: '0.5'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/docker-riverproui.yaml

@@ -292,7 +292,7 @@ jobs:
           fi
 
       - name: Install crane
-        uses: imjasonh/setup-crane@v0.4
+        uses: imjasonh/setup-crane@v0.6
 
       - name: Compute manifest digest for attestation
         id: manifest_digest
@@ -439,7 +439,7 @@ jobs:
           password: ${{ secrets.RIVERPRO_GO_MOD_CREDENTIAL }}
 
       - name: Install crane
-        uses: imjasonh/setup-crane@v0.4
+        uses: imjasonh/setup-crane@v0.6
 
       - name: Set up ORAS CLI
         uses: oras-project/setup-oras@v1