Merge pull request #515 from tonistiigi/revert-v0.18.0-pin

Revert "ci: pin buildx latest to v0.18.0"

.github/workflows/buildx-releases-json.yml

@@ -22,7 +22,6 @@ jobs:
       repository: docker/buildx
       artifact_name: buildx-releases-json
       filename: buildx-releases.json
-      pin_latest: v0.18.0
     secrets: inherit
 
   open-pr: