Bump xunit.abstractions and xunit.extensibility.execution (#489)

Bumps [xunit.abstractions](https://github.com/xunit/xunit) and [xunit.extensibility.execution](https://github.com/xunit/xunit). These dependencies needed to be updated together.

Updates `xunit.abstractions` from 2.0.3 to 2.0.3
- [Commits](https://github.com/xunit/xunit/commits)

Updates `xunit.extensibility.execution` from 2.9.2 to 2.9.3
- [Commits](xunit/xunit@v2-2.9.2...v2-2.9.3)

---
updated-dependencies:
- dependency-name: xunit.abstractions
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: xunit.extensibility.execution
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>