Add missing permissions on master pipeline (#2687)

Signed-off-by: Mauro Morales <[email protected]>

.github/workflows/image.yaml

@@ -248,6 +248,21 @@ jobs:
             releaseMatcher: leap-15.5
   custom-partitioning:
     uses: ./.github/workflows/reusable-custom-partitioning-test.yaml
+    permissions:
+      id-token: write  # OIDC support
+      contents: write
+      security-events: write
+      actions: read
+      attestations: read
+      checks: read
+      deployments: read
+      discussions: read
+      issues: read
+      packages: read
+      pages: read
+      pull-requests: read
+      repository-projects: read
+      statuses: read
     with:
       flavor: ${{ matrix.flavor }}
       flavor_release: ${{ matrix.flavorRelease }}