ci: On release, use local attestation workflow

Until now we were using the kubewarden/github-actions/attestation
GHA.

Signed-off-by: Víctor Cuadrado Juan <vcuadradojuan@suse.de>

Author: viccuad

.github/workflows/release.yml

@@ -113,21 +113,17 @@ jobs:
   attestation:
     name: Generate attestations
     needs: build-containers
-    runs-on: ubuntu-latest
     permissions:
       packages: write
       id-token: write
     strategy:
       matrix:
         component: [kubewarden-controller, audit-scanner, policy-server]
         arch: [amd64, arm64]
-    steps:
-      - name: Generate and sign attestations
-        uses: kubewarden/github-actions/attestation@f1695ca9a575bf58b85d6c3652c7ff7d1d12ec24 # v4.5.16
-        with:
-          component: ${{ matrix.component }}
-          arch: ${{ matrix.arch }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+    uses: ./.github/workflows/attestation.yml
+    with:
+      component: ${{ matrix.component }}
+      arch: ${{ matrix.arch }}
 
   release:
     name: Create release