v0.87.0

What's new:

• Allow adding hooks without depending on an external service (#4779)
• Add support for S3 buckets using SSE with KMS secret (#4726)
• Allow user to subscribe for email feature updates and/or security alerts during setup (#4667)

Bug fixes:

• [GC]: Correctly handle deleting absolute paths under the storage namespace (#4763)
• Ref lookup order now prefers commit and branch refs for user actions (#4743)
• Fix Python LakeFSClient missing API tags (#4606)