ci: add permissions to release-sdk caller job

The release-please workflow fails with startup_failure because the
caller job invoking publish.yml does not declare explicit permissions.
This causes the reusable workflow's permission requirements to exceed
the restricted defaults.

Co-Authored-By: rlamb@launchdarkly.com <4955475+kinyoklion@users.noreply.github.com>

Author: devin-ai-integration[bot]

.github/workflows/release-please.yml

@@ -20,6 +20,10 @@ jobs:
 
   release-sdk:
     needs: ['release-please']
+    permissions:
+      id-token: write
+      contents: write
+      attestations: write
     if: ${{ needs.release-please.outputs.release-created == 'true' }}
     uses: ./.github/workflows/publish.yml
     with: