Add id-token write permission to Docker workflow

Grants the workflow 'id-token: write' permission, which may be required for certain authentication steps or integrations in the Docker build and publish process.

.github/workflows/docker.yml

@@ -22,6 +22,7 @@ jobs:
     permissions:
       contents: read
       packages: write
+      id-token: write
 
     steps:
       - name: Checkout repository