Dockerfile: update buildx to v0.23.0

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Dockerfile

@@ -12,7 +12,7 @@ ARG GOTESTSUM_VERSION=v1.12.0
 # BUILDX_VERSION sets the version of buildx to use for the e2e tests.
 # It must be a tag in the docker.io/docker/buildx-bin image repository
 # on Docker Hub.
-ARG BUILDX_VERSION=0.20.1
+ARG BUILDX_VERSION=0.23.0
 ARG COMPOSE_VERSION=v2.32.4
 
 FROM --platform=$BUILDPLATFORM tonistiigi/xx:${XX_VERSION} AS xx

dockerfiles/Dockerfile.dev

@@ -6,7 +6,7 @@ ARG ALPINE_VERSION=3.21
 # BUILDX_VERSION sets the version of buildx to install in the dev container.
 # It must be a valid tag in the docker.io/docker/buildx-bin image repository
 # on Docker Hub.
-ARG BUILDX_VERSION=0.20.1
+ARG BUILDX_VERSION=0.23.0
 FROM docker/buildx-bin:${BUILDX_VERSION} AS buildx
 
 FROM golang:${GO_VERSION}-alpine${ALPINE_VERSION} AS golang