root: set utm_source

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>

authentik/root/settings.py

@@ -440,12 +440,12 @@ if not CONFIG.y_bool("disable_startup_analytics", False):
             json={
                 "domain": "authentik",
                 "name": "pageview",
-                "url": f"http://localhost/{env}",
                 "referrer": f"{__version__} ({build_hash})",
+                "url": f"http://localhost/{env}?utm_source={__version__}&utm_medium={env}",
             },
             headers={
                 "User-Agent": sha512(SECRET_KEY.encode("ascii")).hexdigest()[:16],
-                "Content-Type": "text/plain",
+                "Content-Type": "application/json",
             },
         )