Bumped glean_parser version to 4.0.0

Author: badboy

glean/src/cli.ts

@@ -19,7 +19,7 @@ const LOG_TAG = "CLI";
 const VIRTUAL_ENVIRONMENT_DIR = ".venv";
 
 // The version of glean_parser to install from PyPI.
-const GLEAN_PARSER_VERSION = "3.8.0";
+const GLEAN_PARSER_VERSION = "4.0.0";
 
 // This script runs a given Python module as a "main" module, like
 // `python -m module`. However, it first checks that the installed