add changelog entry

CHANGELOG.md

@@ -1,10 +1,10 @@
 ## Main
-
+* [5568](https://github.com/grafana/loki/pull/5568) **afayngelerindbx**: Fix canary panics due to concurrent execution of `confirmMissing`
 * [5552](https://github.com/grafana/loki/pull/5552) **jiachengxu**: Loki mixin: add `DiskSpaceUtilizationPanel`
 * [5541](https://github.com/grafana/loki/pull/5541) **bboreham**: Queries: reject very deeply nested regexps which could crash Loki.
 * [5536](https://github.com/grafana/loki/pull/5536) **jiachengxu**: Loki mixin: make labelsSelector in loki chunks dashboards configurable
 * [5535](https://github.com/grafana/loki/pull/5535) **jiachengxu**: Loki mixins: use labels selector for loki chunks dashboard
-* [5507](https://github.com/grafana/loki/pull/5507) **MichelHollands**: Remove extra param in call for inflightRequests metric. 
+* [5507](https://github.com/grafana/loki/pull/5507) **MichelHollands**: Remove extra param in call for inflightRequests metric.
 * [5356](https://github.com/grafana/loki/pull/5356) **jbschami**: Enhance lambda-promtail to support adding extra labels from an environment variable value
 * [5409](https://github.com/grafana/loki/pull/5409) **ldb**: Enable best effort parsing for Syslog messages
 * [5392](https://github.com/grafana/loki/pull/5392) **MichelHollands**: Etcd credentials are parsed as secrets instead of plain text now.