Release 9.1.9

What's Changed

• Serve capabilities from config if present by @francoisferrand in #6021
• CLDSRV-822: Fix multiobject delete metric utapiv1 by @tmacro in #6048
• bf(CLDSRV-831): Install python3-redis in docker images for utapiv1 reindex by @tmacro in #6049
• CLDSRV-829: Increase KMS load test tolerance from 10% to 20% by @BourgoisMickael in #6054
• CLDSRV-843: Bump utapi by @tmacro in #6052

Full Changelog: 9.1.8...9.1.9