fix: health check now treats HTTP 403 as healthy

Nautobot 3.x returns 403 Forbidden on unauthenticated GET /api/ requests.
urllib.request.urlopen() raises HTTPError on non-2xx responses, so the
container was never marked healthy even though the server was running.
Updated the health check to exit 0 when the server responds 401 or 403.

Co-authored-by: Jackass4life <94110786+Jackass4life@users.noreply.github.com>
Agent-Logs-Url: https://github.com/Jackass4life/Nautobot-maps/sessions/e33098a2-27ad-47ed-bb23-50a04349a069

Author: Copilot

development/docker-compose.yml

@@ -73,7 +73,7 @@ services:
           "CMD",
           "python",
           "-c",
-          "import urllib.request; urllib.request.urlopen('http://localhost:8080/api/')",
+          "import urllib.request, urllib.error, sys\ntry:\n  urllib.request.urlopen('http://localhost:8080/api/')\nexcept urllib.error.HTTPError as e:\n  sys.exit(0 if e.code in (401, 403) else 1)\nexcept Exception:\n  sys.exit(1)\n",
         ]
       interval: 10s
       timeout: 5s