chore: remove arm64 arch

Author: vishnu-narayanan

.github/workflows/build.yaml

@@ -40,7 +40,7 @@ jobs:
           push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
-          platforms: linux/amd64,linux/arm64
+          platforms: linux/amd64
           cache-from: type=gha
           cache-to: type=gha,mode=max
           build-args: |