Make sync script executable

Author: jeanp413

scripts/sync-with-upstream.sh

@@ -6,7 +6,7 @@ upstream_url="https://github.com/microsoft/vscode.git"
 upstream_branch=${1:-"upstream/main"}
 local_branch=${2:-"main"}
 base_commit_msg=${3:-"code web server initial commit"}
-only_sync=${4:-"false"}
+only_sync=${4:-"true"}
 
 exit_script() {
 	reason=$1