Fix IPv6 hostname HOSTNAME interpolation

Author: cjavad

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "simplyprint-duet3d"
-version = "1.3.8"
+version = "1.3.9"
 description = "SimplyPrint integration with any Duet3D powered RepRapFirmware printers "
 readme = "README.rst"
 license-files = ["LICENSE"]

simplyprint_duet3d/cli/autodiscover.py

@@ -79,6 +79,8 @@ async def get_webcam_url(duet: RepRapFirmware) -> str:
 
         if duet_url_parse.hostname != '':
             hostname = duet_url_parse.hostname
+            if ":" in hostname:
+                hostname = f"[{hostname}]"
         if webcam_url_parse.port is not None:
             hostname = f"{hostname}:{webcam_url_parse.port}"
         if hostname == '':