Update make lint

[hawflau]

Which issue(s) does this change fix?

N/A

Why is this change necessary?

Since we introduced ruamel as a dependency, running make pr fails every other time because of an issue in mypy
E.g.:

tests/unit/lib/sync/flows/test_rest_api_sync_flow.py:1: error: Skipping analyzing 'ruamel': found module but no type hints or library stubs
tests/unit/lib/sync/flows/test_http_api_sync_flow.py:1: error: Skipping analyzing 'ruamel': found module but no type hints or library stubs
tests/unit/lib/sync/flows/test_function_sync_flow.py:1: error: Skipping analyzing 'ruamel': found module but no type hints or library stubs
samcli/lib/sync/flows/zip_function_sync_flow.py:1: error: Skipping analyzing 'ruamel': found module but no type hints or library stubs

Issue in mypy:

• Incremental parsing issue with namespace packages python/mypy#12664

How does it address the issue?

Apply --no-incredental as a workaround to not use mypy's cachcing mechanism. So it doesn't hit the error.

What side effects does this change have?

mypy/make lint could run slower since it forces mypy to not use caching.

Note that in our CI/CD jobs, mypy is run only once. So we won't have any issue in our CI/CD jobs.
This change helps smoothing the local dev experience a bit because mypy fixes the issue.

Mandatory Checklist

PRs will only be reviewed after checklist is complete

• Add input/output type hints to new functions/methods
• Write design document if needed (Do I need to write a design document?)
• Write/update unit tests
• Write/update integration tests
• Write/update functional tests if needed
• make pr passes
• make update-reproducible-reqs if dependencies were changed
• Write documentation

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.