ci: Fixed latest tag

Author: Oda2

.github/workflows/release.yml

@@ -41,5 +41,5 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
           registry: docker.pkg.github.com
-          repository: oda2/docker-ibmcloud-cli/latest
+          repository: oda2/docker-ibmcloud-cli:latest
           push: true