Fandom wiki is no longer regularly updated.
Unfortunately the other wiki blocks urllib2: https://minecraft.wiki/w/Bedrock_Dedicated_Server
You can use the official site and replace urllib2 with .NET HttpWebRequest

import re, clr
clr.AddReference('System')
clr.AddReference('TCAdmin.GameHosting.SDK')
from System.Net import HttpWebRequest
from System.IO import StreamReader
from TCAdmin.GameHosting.SDK.Objects import GameUpdate, GameScript, ServiceEvent

gameID = 193
scripts = [
    {
        "Name": "Backup server.properties",
        "Event": ServiceEvent.BeforeUpdateInstall,
        'Contents': (
            "from os import path, rename, remove\n"
            "serverproperties = path.join(ThisService.RootDirectory, 'server.properties')\n"
            "if path.isfile(serverproperties):\n"
            "  if path.isfile(serverproperties+'.backup'):\n"
            "    remove(serverproperties+'.backup')\n"
            "  rename(serverproperties, serverproperties+'.backup')"
        )
    },
    {
        "Name": "Delete new server.properties, use old file instead",
        "Event": ServiceEvent.AfterUpdateInstall,
        "Contents": (
            "from os import path, rename, remove\n"
            "serverproperties = path.join(ThisService.RootDirectory, 'server.properties')\n"
            "if path.isfile(serverproperties):\n"
            "  remove(serverproperties)\n"
            "rename(serverproperties+'.backup', serverproperties)"
        )
    }
]

# Fetch existing updates
updates = GameUpdate.GetUpdates(gameID)

# Fetch version page using .NET HttpWebRequest
try:
    url = "https://www.minecraft.net/en-us/download/server/bedrock"
    request = HttpWebRequest.Create(url)
    request.UserAgent = "Mozilla/5.0"
    response = request.GetResponse()
    stream = response.GetResponseStream()
    reader = StreamReader(stream)
    html = reader.ReadToEnd()
except Exception as ex:
    Script.WriteToConsole("Failed to fetch update page: {}".format(str(ex)))
    raise

# Extract versions from the HTML
regex_pattern = r'https://www\.minecraft\.net/bedrockdedicatedserver/bin-win/bedrock-server-(?P<version>[\d\.]+)\.zip'
matches = re.findall(regex_pattern, html)

if len(matches) > 0:
    for version in matches:
        release = ''  # No preview flag in this format

        # Generate view order
        parts = version.split('.')
        for i in range(4):
            parts[i] = parts[i].zfill(3)
        view_order = -int(''.join(parts))

        # Check if update already exists
        skip = False
        for gameUpdate in updates:
            if gameUpdate.Name == "Bedrock Edition " + version:
                Script.WriteToConsole('Skipping version {}'.format(version))
                skip = True
                break

        if not skip:
            update = GameUpdate()
            update.Name = "Bedrock Edition " + version
            update.Comments = ""
            update.ImageUrl = "https://www.minecraft.net/etc.clientlibs/minecraft/clientlibs/main/resources/img/header/logo.png"
            update.GameId = gameID
            update.GroupName = "Minecraft: Bedrock Edition"
            update.ExtractPath = "/"
            update.WindowsFileName = "https://www.minecraft.net/bedrockdedicatedserver/bin-win/bedrock-server-{}.zip".format(version)
            update.LinuxFileName = "https://www.minecraft.net/bedrockdedicatedserver/bin-linux/bedrock-server-{}.zip".format(version)
            update.Reinstallable = True
            update.DefaultInstall = False
            update.UserAccess = True
            update.SubAdminAccess = True
            update.ResellerAccess = True
            update.ViewOrder = view_order
            update.GenerateKey()
            update.Save()
            Script.WriteToConsole("Added update for Minecraft: Bedrock Edition v{}".format(version))

            # Attach the event scripts
            for script in scripts:
                updateScript = GameScript()
                updateScript.Description = script["Name"]
                updateScript.ScriptContents = script["Contents"]
                updateScript.ServiceEvent = script["Event"]
                updateScript.ExecuteAsServiceUser = False
                updateScript.ExecuteInPopup = False
                updateScript.ExecutionOrder = 0
                updateScript.GameId = gameID
                updateScript.IgnoreErrors = False
                updateScript.OperatingSystem = 0  # 0 = Any
                updateScript.PromptVariables = False
                updateScript.UserAccess = True
                updateScript.SubAdminAccess = True
                updateScript.ResellerAccess = True
                updateScript.ScriptEngineId = 1  # IronPython
                updateScript.UpdateId = update.UpdateId
                updateScript.GenerateKey()
                updateScript.Save()

            # Update latest pointer if needed
            for existing in updates:
                if 'Latest Bedrock Update' in existing.Notes:
                    Script.WriteToConsole('Changing the links for the latest Bedrock update')
                    existing.WindowsFileName = "https://www.minecraft.net/bedrockdedicatedserver/bin-win/bedrock-server-{}.zip".format(version)
                    existing.LinuxFileName = "https://www.minecraft.net/bedrockdedicatedserver/bin-linux/bedrock-server-{}.zip".format(version)
                    existing.Save()
else:
    Script.WriteToConsole("No versions found.")

updated script to use https://mcjarfiles.com/ API instead of scraping data from wiki