Bump required to alpha.12

Dockerfile

@@ -54,7 +54,7 @@ RUN mkdir -p $opt_lsp_dir \
     && ln -s $opt_bin_dir/lua-language-server /usr/local/bin/lua-language-server
 
 # Install distant binary and make sure its in a path for everyone
-ARG distant_version=0.20.0-alpha.11
+ARG distant_version=0.20.0-alpha.12
 ARG distant_host=x86_64-unknown-linux-musl
 RUN curl -L sh.distant.dev | sh -s -- --install-dir "$opt_bin_dir" --distant-version $distant_version --distant-host $distant_host --run-as-admin \
     && ln -s "$opt_bin_dir/distant" /usr/local/bin/distant \