Merge pull request #247 from jsternberg/buildkit-0.20.2

dockerfile: update buildkit to 0.20.2

Author: crazy-max

Dockerfile

@@ -4,7 +4,7 @@ ARG GO_VERSION=1.23
 ARG ALPINE_VERSION=3.21
 ARG XX_VERSION=1.6.1
 
-ARG BUILDKIT_VERSION=v0.20.1
+ARG BUILDKIT_VERSION=v0.20.2
 ARG BUILDX_VERSION=v0.22.0
 ARG REGISTRY_VERSION=v2.8.3