ci(DATAGO-131317): add packages:read permission for GHCR container pull (#155)

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: johnvincentcorpuz

.github/workflows/build-plugin.yaml

@@ -54,6 +54,7 @@ permissions:
   statuses: write
   checks: write
   repository-projects: read
+  packages: read
 
 env:
   PYTHON_VERSION: "3.13"

.github/workflows/ci.yaml

@@ -18,6 +18,7 @@ permissions:
   checks: write
   repository-projects: read
   id-token: write
+  packages: read
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}