Update CHANGELOG.md (#6640)

The marked change requires that users set a security context so that mounted volumes (PVCs in particular) will be writable by the `thanos` user.

Signed-off-by: verejoel <[email protected]>

CHANGELOG.md

@@ -76,7 +76,7 @@ We use *breaking :warning:* to mark changes that are not backward compatible (re
 - [#6168](https://github.com/thanos-io/thanos/pull/6168) Receiver: Make ketama hashring fail early when configured with number of nodes lower than the replication factor.
 - [#6201](https://github.com/thanos-io/thanos/pull/6201) Query-Frontend: Disable absent and absent_over_time for vertical sharding.
 - [#6212](https://github.com/thanos-io/thanos/pull/6212) Query-Frontend: Disable scalar for vertical sharding.
-- [#6107](https://github.com/thanos-io/thanos/pull/6107) Change default user id in container image from 0(root) to 1001
+- [#6107](https://github.com/thanos-io/thanos/pull/6107) *breaking :warning:* Change default user id in container image from 0(root) to 1001
 - [#6228](https://github.com/thanos-io/thanos/pull/6228) Conditionally generate debug messages in ProxyStore to avoid memory bloat.
 - [#6231](https://github.com/thanos-io/thanos/pull/6231) mixins: Add code/grpc-code dimension to error widgets.
 - [#6244](https://github.com/thanos-io/thanos/pull/6244) mixin(Rule): Add rule evaluation failures to the Rule dashboard.