[IsItDown] IsItDown.site API appears to be refusing all connections.

[Deanosim]

Describe the bug
IsItDown Cog no longer working, the Site/API is uses doesn't appear to be working and responds with connection refused.

To Reproduce

1. Run command 'isitdown example.site'
2. See error Error in command 'isitdown'. Check your console or logs for details.

Screenshots or Error Messages

Traceback (most recent call last):
  File "/data/venv/lib/python3.11/site-packages/aiohttp/connector.py", line 980, in _wrap_create_connection
    return await self._loop.create_connection(*args, **kwargs)  # type: ignore[return-value]  # noqa
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "uvloop/loop.pyx", line 2039, in create_connection
  File "uvloop/loop.pyx", line 2016, in uvloop.loop.Loop.create_connection
ConnectionRefusedError: [Errno 111] Connection refused

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/data/venv/lib/python3.11/site-packages/discord/ext/commands/core.py", line 229, in wrapped
    ret = await coro(*args, **kwargs)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/cogs/CogManager/cogs/isitdown/isitdown.py", line 39, in isitdown
    resp, url = await self._check_if_down(url_to_check)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/cogs/CogManager/cogs/isitdown/isitdown.py", line 57, in _check_if_down
    async with session.get(url) as response:
  File "/data/venv/lib/python3.11/site-packages/aiohttp/client.py", line 1141, in __aenter__
    self._resp = await self._coro
                 ^^^^^^^^^^^^^^^^
  File "/data/venv/lib/python3.11/site-packages/aiohttp/client.py", line 536, in _request
    conn = await self._connector.connect(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/venv/lib/python3.11/site-packages/aiohttp/connector.py", line 540, in connect
    proto = await self._create_connection(req, traces, timeout)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/venv/lib/python3.11/site-packages/aiohttp/connector.py", line 901, in _create_connection
    _, proto = await self._create_direct_connection(req, traces, timeout)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/venv/lib/python3.11/site-packages/aiohttp/connector.py", line 1206, in _create_direct_connection
    raise last_exc
  File "/data/venv/lib/python3.11/site-packages/aiohttp/connector.py", line 1175, in _create_direct_connection
    transp, proto = await self._wrap_create_connection(
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/venv/lib/python3.11/site-packages/aiohttp/connector.py", line 988, in _wrap_create_connection
    raise client_error(req.connection_key, exc) from exc
aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host isitdown.site:443 ssl:default [Connection refused]

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/data/venv/lib/python3.11/site-packages/discord/ext/commands/bot.py", line 1350, in invoke
    await ctx.command.invoke(ctx)
  File "/data/venv/lib/python3.11/site-packages/discord/ext/commands/core.py", line 1023, in invoke
    await injected(*ctx.args, **ctx.kwargs)  # type: ignore
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/data/venv/lib/python3.11/site-packages/discord/ext/commands/core.py", line 238, in wrapped
    raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: ClientConnectorError: Cannot connect to host isitdown.site:443 ssl:default [Connection refused]

Additional context
Running latest version of Red and latest version of cog and repo.
Also tried going to isitdown.site and using online tools to check and it appears to just be refusing all connections.

[Deanosim]

It would appear the sites repo has been archived.
https://github.com/FedericoPonzi/Isitdown.site