ci(gleam): fix .cache creation

.github/citools/common/gh-setup-env

@@ -173,7 +173,7 @@ main() {
 
 		printf "Setup Gleam symlinks for github user:\n"
 		cd "${HOME}" || track_errors
-		if [[ ! -d .pyenv ]]; then
+		if [[ ! -d .cache ]]; then
 			mkdir .cache || track_errors
 			ln -sv "/usr/local/rebar3" .cache/rebar3 || track_errors
 		fi