Slackblocks

What's Changed
* [CI] Separate out unit tests from linting by nicklambourne in https://github.com/nicklambourne/slackblocks/pull/44
* Bump cryptography from 41.0.3 to 41.0.4 by dependabot in https://github.com/nicklambourne/slackblocks/pull/46
* Bump urllib3 from 2.0.4 to 2.0.6 by dependabot in https://github.com/nicklambourne/slackblocks/pull/47
* Add unfurl_links and unfurl_media arguments to Message by foobic in https://github.com/nicklambourne/slackblocks/pull/49

New Contributors
* foobic made their first contribution in https://github.com/nicklambourne/slackblocks/pull/49

**Full Changelog**: https://github.com/nicklambourne/slackblocks/compare/v0.9.11...v0.9.12

What's Changed
* [BUG] Allow None value for UserSelectMenu placeholders and others by nicklambourne in https://github.com/nicklambourne/slackblocks/pull/43


**Full Changelog**: https://github.com/nicklambourne/slackblocks/compare/v0.9.10...v0.9.11

What's Changed
* [BUG] Ensure ModalView optional fields allow None defaults by nicklambourne in https://github.com/nicklambourne/slackblocks/pull/41


**Full Changelog**: https://github.com/nicklambourne/slackblocks/compare/v0.9.9...v0.9.10

What's Changed
* Fixes 36 with `[BUG] Do not submit default fields for ModalViews` by nicklambourne in https://github.com/nicklambourne/slackblocks/pull/38


**Full Changelog**: https://github.com/nicklambourne/slackblocks/compare/v0.9.8...v0.9.9

Change Summary
- Adds `InputBlock` block type: https://github.com/nicklambourne/slackblocks/pull/37

Fixes: https://github.com/nicklambourne/slackblocks/issues/31

Change List:
- Corrects out of date validation for `SectionBlock`, allowing `None` as a valid option for `text` when `fields` is provided.
- Adds a test for that use case, as well as several others related to the new validation.
- Shifts the `test_block` tests to using the new `fetch_sample` utility instead of `reads`.
- Bumps version to `v0.9.7`.

Breaking Changes:
- None