Upgrade buildx from 0.18.0 to 0.19.3

Includes:
- https://github.com/docker/buildx/releases/tag/v0.19.0
- https://github.com/docker/buildx/releases/tag/v0.19.1
- https://github.com/docker/buildx/releases/tag/v0.19.2
- https://github.com/docker/buildx/releases/tag/v0.19.3

Author: MPV

images/Dockerfile

@@ -6,7 +6,7 @@ ARG TARGETARCH
 ARG RUNNER_VERSION
 ARG RUNNER_CONTAINER_HOOKS_VERSION=0.6.1
 ARG DOCKER_VERSION=27.3.1
-ARG BUILDX_VERSION=0.18.0
+ARG BUILDX_VERSION=0.19.3
 
 RUN apt update -y && apt install curl unzip -y