lint: enable E722 do not use bare except

contrib/signet/getcoins.py

@@ -142,7 +142,7 @@ if args.captcha != '': # Retrieve a captcha
 
 try:
     res = session.post(args.faucet, data=data)
-except:
+except Exception:
     raise SystemExit(f"Unexpected error when contacting faucet: {sys.exc_info()[0]}")
 
 # Display the output as per the returned status code