chore(ci): use Kyverno GitHub Action to install CLI instead of manual download

Replaces custom install logic with official kyverno/action-install-cli for version v1.13.4.

Author: wnqueiroz

.github/workflows/validate-claims.yaml

@@ -18,12 +18,12 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Kyverno CLI
-        run: |
-          curl -LO https://github.com/kyverno/kyverno/releases/download/v1.12.0/kyverno-cli_v1.12.0_linux_x86_64.tar.gz
-          mkdir -p /tmp/kyverno-cli
-          tar -xvf kyverno-cli_v1.12.0_linux_x86_64.tar.gz -C /tmp/kyverno-cli
-          sudo mv /tmp/kyverno-cli/kyverno /usr/local/bin/
-          kyverno version
+        uses: kyverno/action-install-cli@v0.2.0
+        with:
+          release: "v1.13.4"
+
+      - name: Check install
+        run: kyverno version
 
       - name: Run Kyverno policy checks on claims
         run: |