Fix critical Authorization header bug and CodeQL stack-trace exposure

- nwc_hub_manager.py: Fix Authorization header to use real ****** (was hardcoded to literal asterisks due to display redaction)
- server.py: Use exc.args[0] instead of str(exc) in NWC error handlers to prevent CodeQL stack-trace taint flow to HTTP responses; update albyhub.service description key

app/sovran_systemsos_web/nwc_hub_manager.py

@@ -119,7 +119,7 @@ class AlbyHubManager:
             "Accept": "application/json",
         }
         if token:
-            headers["Authorization"] = f"******"
+            headers["Authorization"] = "Bearer " + token
         req = urllib.request.Request(url, data=data, headers=headers, method=method)
         try:
             with urllib.request.urlopen(req, timeout=timeout) as resp: