6.7.2:release-notes (#3841)
6.7.2:release-notes (#3841)

* 6.7.2:release-notes

* Apply suggestions from code review

Co-authored-by: Hillary Fraley <851bf255a36dbf7a726215fdb59948e98da76b46@users.noreply.github.com>

* Apply suggestions from code review

* Apply suggestions from code review

* Apply suggestions from code review

* Update release date for 6.7.2

* Add Ubuntu 22.04 packages to 6.7.2 release notes

Co-authored-by: Hillary Fraley <851bf255a36dbf7a726215fdb59948e98da76b46@users.noreply.github.com>
sensu/sensu-docs,sensu/sensu-docs,sensu/sensu-docs,sensu/sensu-docs,sensu/sensu-docs