Merge pull request #8789 from rabbitmq/mergify/bp/v3.12.x/pr-8788

Explicitly set HOME in `elixir_build` rule (backport #8788)

Author: michaelklishin

bazel/elixir/elixir_build.bzl

@@ -64,6 +64,7 @@ fi
 {maybe_install_erlang}
 
 export PATH="{erlang_home}"/bin:${{PATH}}
+export HOME="$(mktemp -d)"
 
 ABS_BUILD_DIR=$PWD/{build_path}
 ABS_RELEASE_DIR=$PWD/{release_path}