changelog: release v2.8.2

Update backend deps (#1563)

* backend: update to protovalidate v0.8

* backend: update all backend dependencies

* chore: compile all protos

Merge branch 'master' into release-2.8

chore: add v2.8.0-beta.1 changelog

fixes a case when form in ACL can't be submitted (#1435)

frontend: disable edit user button when when roles api is not enabled (…

…#1371)

fix typo in route definitions (#1352)

chore: update changelog for 2.6.1

backend: revert api suite redpanda image update

backend: update all dependencies (#1239)

* backend: update all dependencies

* backend: update common-go dependencies