Plugin should handle API timeouts

[dgw]

Just a quick note that occasionally, sending the API request to get information about a repo/issue/PR/etc. will fail and eventually yield an error on IRC such as:

<+Sopel> Unexpected ConnectTimeout (HTTPSConnectionPool(host='api.github.com', port=443): Max retries exceeded with url:
         /repos/znc/znc/issues/1224 (Caused by ConnectTimeoutError(<urllib3.connection.HTTPSConnection object at
         0x7f5d8fac0070>, 'Connection to api.github.com timed out. (connect timeout=None)'))) from dgw. Message was:
         https://github.com/znc/znc/issues/1224

The full traceback is quite messy because it's nested exceptions:

Traceback mess in all its glory

[2024-02-24 02:57:11,388] sopel.bot            ERROR    - Unexpected ConnectTimeout (HTTPSConnectionPool(host='api.github.com', port=443): Max retries exceeded with url: /repos/znc/znc/issues/1224 (Caused by ConnectTimeoutError(<urllib3.connection.HTTPSConnection object at 0x7f5d8fac0070>, 'Connection to api.github.com timed out. (connect timeout=None)'))) from dgw. Message was: https://github.com/znc/znc/issues/1224
Traceback (most recent call last):
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/urllib3/connection.py", line 174, in _new_conn
    conn = connection.create_connection(
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/urllib3/util/connection.py", line 95, in create_connection
    raise err
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/urllib3/util/connection.py", line 85, in create_connection
    sock.connect(sa)
TimeoutError: [Errno 110] Connection timed out

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/urllib3/connectionpool.py", line 703, in urlopen
    httplib_response = self._make_request(
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/urllib3/connectionpool.py", line 386, in _make_request
    self._validate_conn(conn)
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/urllib3/connectionpool.py", line 1042, in _validate_conn
    conn.connect()
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/urllib3/connection.py", line 358, in connect
    self.sock = conn = self._new_conn()
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/urllib3/connection.py", line 179, in _new_conn
    raise ConnectTimeoutError(
urllib3.exceptions.ConnectTimeoutError: (<urllib3.connection.HTTPSConnection object at 0x7f5d8fac0070>, 'Connection to api.github.com timed out. (connect timeout=None)')

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/requests/adapters.py", line 489, in send
    resp = conn.urlopen(
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/urllib3/connectionpool.py", line 787, in urlopen
    retries = retries.increment(
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/urllib3/util/retry.py", line 592, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='api.github.com', port=443): Max retries exceeded with url: /repos/znc/znc/issues/1224 (Caused by ConnectTimeoutError(<urllib3.connection.HTTPSConnection object at 0x7f5d8fac0070>, 'Connection to api.github.com timed out. (connect timeout=None)'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/sopel/sopel-git/sopel/bot.py", line 695, in call_rule
    rule.execute(sopel, trigger)
  File "/home/sopel/sopel-git/sopel/plugins/rules.py", line 1274, in execute
    exit_code = self._handler(bot, trigger)
  File "/home/sopel/sopel-git/sopel/plugins/rules.py", line 1792, in handler_match_wrapper
    return handler(bot, trigger, match=trigger)
  File "/home/sopel/sopel-github/sopel_modules/github/github.py", line 174, in issue_info
    raw = fetch_api_endpoint(bot, URL)
  File "/home/sopel/sopel-github/sopel_modules/github/github.py", line 125, in fetch_api_endpoint
    return requests.get(url, headers={'X-GitHub-Api-Version': '2022-11-28'}, auth=auth).text
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/requests/api.py", line 73, in get
    return request("get", url, params=params, **kwargs)
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/requests/api.py", line 59, in request
    return session.request(method=method, url=url, **kwargs)
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/requests/sessions.py", line 587, in request
    resp = self.send(prep, **send_kwargs)
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/requests/sessions.py", line 701, in send
    r = adapter.send(request, **kwargs)
  File "/home/sopel/.local/lib/pyenv/versions/3.10.7-sopel-libera/lib/python3.10/site-packages/requests/adapters.py", line 553, in send
    raise ConnectTimeout(e, request=request)
requests.exceptions.ConnectTimeout: HTTPSConnectionPool(host='api.github.com', port=443): Max retries exceeded with url: /repos/znc/znc/issues/1224 (Caused by ConnectTimeoutError(<urllib3.connection.HTTPSConnection object at 0x7f5d8fac0070>, 'Connection to api.github.com timed out. (connect timeout=None)'))