Update sot/find_attitude to 3.5.0

[javierggt]

What's Changed

• Support AGASC 1.8 and fix tests and modernize by @taldcroft in https://github.com/sot/find_attitude/pull/30
• Add pitch, attitude constraints and 2- and 3-star solutions by @taldcroft in https://github.com/sot/find_attitude/pull/31
• Fix a tiny (0.01) arcsec change in a test by @taldcroft in https://github.com/sot/find_attitude/pull/32
• Constrain test_ra_dec_roll regression test to a specific date by @taldcroft in https://github.com/sot/find_attitude/pull/35

Full Changelog: https://github.com/sot/find_attitude/compare/3.4.4...3.5.0

Includes the following merges:

• PR #35: Constrain test_ra_dec_roll regression test to a specific date
• PR #32: Fix a tiny (0.01) arcsec change in a test
• PR #31: Add pitch, attitude constraints and 2- and 3-star solutions
• PR #30: Support AGASC 1.8 and fix tests and modernize