v9.20.0

bumpversion is broken, manually bumping to a new version + release for internal DESI tests

What's Changed

• first try on the picca logo by @corentinravoux in #1120
• Replace deprecated np.in1d with np.isin by @Copilot in #1127
• merging fix in main to pass tests by @corentinravoux in #1129
• [bump minor] Change default branch from 'master' to 'main' by @corentinravoux in #1123
• Template cosmo by @calumgordon in #1124
• bumping manually before solving bumpversion issue by @corentinravoux in #1132

Full Changelog: v9.19.0...v9.20.0