Python-SDK - v5.5.0

• [FSSDK-12035] Update: Exclude CMAB from UserProfileService by @FarhanAnjum-opti in https://github.com/optimizely/python-sdk/pull/474
• [FSSDK-12149] [Python] Add Event Retries by @esrakartalOpt in https://github.com/optimizely/python-sdk/pull/475
• [FSSDK-12276] update: replace flake8 with ruff by @FarhanAnjum-opti in https://github.com/optimizely/python-sdk/pull/492
• [FSSDK-12320] bugfix: PollingConfigManager rejects valid URL-only configuration by @FarhanAnjum-opti in https://github.com/optimizely/python-sdk/pull/497
• [FSSDK-12317] update: clear arnica risks by @FarhanAnjum-opti in https://github.com/optimizely/python-sdk/pull/498
• [AI-FSSDK] [FSSDK-12337] Add Feature Rollout support by @FarhanAnjum-opti in https://github.com/optimizely/python-sdk/pull/499
• [AI-FSSDK] [FSSDK-12418] Remove experiment type validation from config parsing by @FarhanAnjum-opti in https://github.com/optimizely/python-sdk/pull/500
• [FSSDK-12497] Fix return in finally block silently swallowing exceptions by @FarhanAnjum-opti in https://github.com/optimizely/python-sdk/pull/505
• [AI-FSSDK] [FSSDK-12368] Cleanup flag base setup (local holdouts) by @Mat001 in https://github.com/optimizely/python-sdk/pull/507
• [FSSDK-12521] chore: preparing for release v5.5.0 by @FarhanAnjum-opti in https://github.com/optimizely/python-sdk/pull/508

Full Changelog: https://github.com/optimizely/python-sdk/compare/v5.4.0...v5.5.0