Pull request endpoints 404ing on repos with PRs disabled

[MoralCode]

Looks like github just rolled out the ability to disable PRs for repos and its causing failures

example repo: https://github.com/gstreamer/gst-plugins-base

Failing task: augur.tasks.github.pull_requests.tasks.collect_pull_requests

Stack Trace

Traceback (most recent call last):
  File "/augur/.venv/lib/python3.11/site-packages/celery/app/trace.py", line 453, in trace_task
    R = retval = fun(*args, **kwargs)
                 ^^^^^^^^^^^^^^^^^^^^
  File "/augur/.venv/lib/python3.11/site-packages/celery/app/trace.py", line 736, in __protected_call__
    return self.run(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/augur/augur/tasks/github/pull_requests/tasks.py", line 46, in collect_pull_requests
    for pr in retrieve_all_pr_data(repo_git, logger, manifest.key_auth, core_data_last_collected):
  File "/augur/augur/tasks/github/pull_requests/tasks.py", line 79, in retrieve_all_pr_data
    num_pages = github_data_access.get_resource_page_count(url)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/augur/augur/tasks/github/util/github_data_access.py", line 90, in get_resource_page_count
    response = self.make_request_with_retries(url, method="HEAD")
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/augur/augur/tasks/github/util/github_data_access.py", line 163, in make_request_with_retries
    return self.__make_request_with_retries(url, method, timeout)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/augur/.venv/lib/python3.11/site-packages/tenacity/__init__.py", line 330, in wrapped_f
    return self(f, *args, **kw)
           ^^^^^^^^^^^^^^^^^^^^
  File "/augur/.venv/lib/python3.11/site-packages/tenacity/__init__.py", line 467, in __call__
    do = self.iter(retry_state=retry_state)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/augur/.venv/lib/python3.11/site-packages/tenacity/__init__.py", line 368, in iter
    result = action(retry_state)
             ^^^^^^^^^^^^^^^^^^^
  File "/augur/.venv/lib/python3.11/site-packages/tenacity/__init__.py", line 390, in <lambda>
    self._add_action_func(lambda rs: rs.outcome.result())
                                     ^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/concurrent/futures/_base.py", line 449, in result
    return self.__get_result()
           ^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/concurrent/futures/_base.py", line 401, in __get_result
    raise self._exception
  File "/augur/.venv/lib/python3.11/site-packages/tenacity/__init__.py", line 470, in __call__
    result = fn(*args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^
  File "/augur/augur/tasks/github/util/github_data_access.py", line 185, in __make_request_with_retries
    result = self.make_request(url, method, timeout)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/augur/augur/tasks/github/util/github_data_access.py", line 133, in make_request
    raise UrlNotFoundException(f"Could not find {url}")
augur.tasks.github.util.github_data_access.UrlNotFoundException: Could not find https://api.github.com/repos/gstreamer/gst-plugins-base/pulls?state=all&direction=desc&sort=updated

[MoralCode]

lots of other repos, especially in the gstreamer org, are affected too