…verloadCurrently the download methods such as `ProjectJob.artifacts` havereturn type set to `Optional[Union[bytes, Iterator[Any]]]` whichmeans they return either `None` or `bytes` or `Iterator[Any]`.However, the actual return type is determined by the passed`streamed` and `iterator` arguments. Using `@typing.overload`decorator it is possible to return a single type based on thepassed arguments.Add overloads in the following order to all download methods:1. If `streamed=False` and `iterator=False` return `bytes`. This   is the default argument values therefore it should be first as   it will be used to lookup default arguments.2. If `iterator=True` return `Iterator[Any]`. This can be combined   with both `streamed=True` and `streamed=False`.3. If `streamed=True` and `iterator=False` return `None`. In this   case `action` argument can be set to a callable that accepts   `bytes`.Signed-off-by: Igor Ponomarev <igor.ponomarev@collabora.com>

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Instead of using absolute ignore `# type: ignore` use a morespecific ignores like `# type: ignore[override]`. This might helpin the future where a new bug might be introduced and get ignoredby a general ignore comment but not a more specific one.Signed-off-by: Igor Ponomarev <igor.ponomarev@collabora.com>

mypy 1.14 has a change to Enum Membership Semantics:https://mypy.readthedocs.io/en/latest/changelog.htmlResolve the issues with Enum and typing, and update mypy to 1.14

The `latest` gitlab-runner image does not have the `gitlab-runner`user and it causes our tests to fail.Closes:#3091

Previously the 'job_with_artifact' fixture could run forever. Now giveit up to 60 seconds to complete before failing.

Currently the only way to manipulate the headers for a requestis to use `Gitlab.headers` attribute. However, this makes itvery concurrently unsafe because the `Gitlab` object can be sharedbetween multiple requests at the same time.Instead add a new keyword argument `extra_headers` which will updatethe headers dictionary with new values just before the request is sent.For example, this can be used to download a part of a artifacts fileusing the `Range` header:https://developer.mozilla.org/en-US/docs/Web/HTTP/Range_requestsSigned-off-by: Igor Ponomarev <igor.ponomarev@collabora.com>

The ef parameter was removed in python-gitlab v4.8.0.  This will add ef back as an optional parameter for the project-file raw cli command.

The CI shows a warning. Use `get_all=False` to resolve issue.

pytest has changed the function argument name to `start_path`

Catch the DeprecationWarning in our test, as we expect it.

Currently the functional API test takes around 17 minutes to run. Andthe functional CLI test takes around 12 minutes to run.Occasionally a job gets stuck and will sit until the default 360minutes job timeout occurs.Now have a 30 minute timeout for the 'functional' tests.

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

…ping.overloadThis is equivalent to the changes in44fd9dcbut for `ProjectFileManager.raw` method that I must have missedin the original commit.Signed-off-by: Igor Ponomarev <igor.ponomarev@collabora.com>