Merge pull request #453 from crazy-max/buildkit-0.29.0-rc1

dockerfile: update buildkit 0.29.0-rc1 and buildx 0.33.0-rc1

Author: crazy-max

Dockerfile

@@ -4,8 +4,8 @@ ARG GO_VERSION=1.25
 ARG ALPINE_VERSION=3.23
 ARG XX_VERSION=1.9.0
 
-ARG BUILDKIT_VERSION=v0.28.0
-ARG BUILDX_VERSION=v0.32.1
+ARG BUILDKIT_VERSION=v0.29.0-rc1
+ARG BUILDX_VERSION=v0.33.0-rc1
 ARG REGISTRY_VERSION=v2.8.3
 
 # named contexts