ci: Fix docker CI in forks (#2435)

docker/compilers/clang/Dockerfile

@@ -18,7 +18,7 @@ RUN apt-get update \
 
 ARG CLANG_MAJOR_VERSION=invalid
 # Bump this version to force rebuild of the image
-ARG BUILD_VERSION=0
+ARG BUILD_VERSION=1
 
 RUN wget --progress=dot:giga https://apt.llvm.org/llvm.sh \
     && chmod +x llvm.sh \

docker/compilers/gcc/Dockerfile

@@ -8,7 +8,7 @@ ARG UBUNTU_VERSION
 
 ARG GCC_MAJOR_VERSION
 
-ARG BUILD_VERSION=0
+ARG BUILD_VERSION=1
 
 ARG DEBIAN_FRONTEND=noninteractive
 ARG TARGETARCH