dockerfile: update buildkit 0.31.0-rc2 and buildx 0.35.0-rc2

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

Author: crazy-max

Dockerfile

@@ -4,8 +4,8 @@ ARG GO_VERSION=1.26
 ARG ALPINE_VERSION=3.23
 ARG XX_VERSION=1.9.0
 
-ARG BUILDKIT_VERSION=v0.30.0
-ARG BUILDX_VERSION=v0.34.0
+ARG BUILDKIT_VERSION=v0.31.0-rc2
+ARG BUILDX_VERSION=v0.35.0-rc2
 ARG REGISTRY_VERSION=v3.0.0
 
 # named contexts