[stable27] fix: chunked upload leading to 0-byte files by @backportbot in https://github.com/nextcloud/server/pull/45038
[stable27] fix(CalDAV): remove UNKNOWN from room / resource consideration by @backportbot in https://github.com/nextcloud/server/pull/45051
[stable27] feat: support "s3-accelerate" endpoint by @backportbot in https://github.com/nextcloud/server/pull/45060
[stable27] fix: Fix default values for ini var in lib/base.php by @backportbot in https://github.com/nextcloud/server/pull/45113
[stable27] chore: Fix update-psalm-baseline to use correct php version depending on branch by @backportbot in https://github.com/nextcloud/server/pull/45123
[stable27] fix(files): Fix ownership transfer encrypted files detection by @backportbot in https://github.com/nextcloud/server/pull/45109
[stable27] fix(DAV): Migrate known exceptions to Sabre exceptions when copying by @backportbot in https://github.com/nextcloud/server/pull/45016
[stable27] fix(OC_Image): Set correct return type for exif_imagetype stub by @backportbot in https://github.com/nextcloud/server/pull/45197
[stable27] fix(user_ldap): Fix a var name by @backportbot in https://github.com/nextcloud/server/pull/45118
[stable27] fix(User\Manager): Avoid future collisions with updater/audit logs by @backportbot in https://github.com/nextcloud/server/pull/45200
[stable27] feat(perf): add cache for authtoken lookup by @backportbot in https://github.com/nextcloud/server/pull/44447
[stable27] fix(userstatus): Fix docs of user status manager by @backportbot in https://github.com/nextcloud/server/pull/45229
[stable27] fix: Remove bogus code from query builder and fix parameter name by @backportbot in https://github.com/nextcloud/server/pull/45115
[stable27] 44032 fix show new shares without refresh by @Fenn-CS in https://github.com/nextcloud/server/pull/44464
[stable27] fix(search): Limit maximum number of search results by @backportbot in https://github.com/nextcloud/server/pull/45320
[stable27] fix: Correctly check result of function by @backportbot in https://github.com/nextcloud/server/pull/45324
[stable27] fix: Extend SVG reference check by @backportbot in https://github.com/nextcloud/server/pull/45343
[stable27] fix(caldav): loop through all events for busy events by @backportbot in https://github.com/nextcloud/server/pull/45311
[stable27] fix(preview): check mime type before processing with Imagick by @backportbot in https://github.com/nextcloud/server/pull/45338
[stable27] fix: add ldap_exop_passwd function to sensitive value by @backportbot in https://github.com/nextcloud/server/pull/45358
[stable27] Hide 'updater.server.url' As It May Contain Enterprise Key by @backportbot in https://github.com/nextcloud/server/pull/45371
27.1.10 RC1 by @skjnldsv in https://github.com/nextcloud/server/pull/45334
[stable27] perf(deleteAction): Queue delete requests by @artonge in https://github.com/nextcloud/server/pull/45376
[stable27] fix: delete user credentials stored in storages_credentials when user gets deleted by @backportbot in https://github.com/nextcloud/server/pull/45361* nextcloud/nextcloud_announcements#330
nextcloud/nextcloud_announcements#335
nextcloud/notifications#1920
nextcloud/photos#2303
nextcloud/related_resources#419
nextcloud/serverinfo#603
nextcloud/survey_client#271
nextcloud/text#5722
nextcloud/text#5793

Full Changelog: https://github.com/nextcloud/server/compare/v27.1.9...v27.1.10rc1