[main] Copy v22.0.0 release notes (vitessio#18224)

Signed-off-by: Florent Poinsard <[email protected]>
Co-authored-by: Florent Poinsard <[email protected]>

Author: vitess-bot

changelog/22.0/22.0.0/changelog.md

@@ -235,8 +235,7 @@
  * Feature Request: Change varbinary to varchar in schemas used in examples folder [#17318](https://github.com/vitessio/vitess/pull/17318) 
 #### General
  * MySQL errors: `ERWrongParamcountToNativeFct` [#16914](https://github.com/vitessio/vitess/pull/16914)
- * Standardize topo flags to use hyphen-based naming [#17975](https://github.com/vitessio/vitess/pull/17975)
- * Refactor flags - Part 4 [#18095](https://github.com/vitessio/vitess/pull/18095) 
+ * Standardize topo flags to use hyphen-based naming [#17975](https://github.com/vitessio/vitess/pull/17975) 
 #### Observability
  * Improve vtgate logging for buffering [#17654](https://github.com/vitessio/vitess/pull/17654)
  * Add more vstream metrics for vstream manager [#17858](https://github.com/vitessio/vitess/pull/17858) 
@@ -537,6 +536,8 @@
  * [release-22.0] Bump to `v22.0.0-SNAPSHOT` after the `v22.0.0-RC1` release [#18134](https://github.com/vitessio/vitess/pull/18134)
  * [release-22.0] Release of `v22.0.0-RC2` [#18168](https://github.com/vitessio/vitess/pull/18168)
  * [release-22.0] Bump to `v22.0.0-SNAPSHOT` after the `v22.0.0-RC2` release [#18170](https://github.com/vitessio/vitess/pull/18170)
+ * [release-22.0] Release of `v22.0.0-RC3` [#18204](https://github.com/vitessio/vitess/pull/18204)
+ * [release-22.0] Bump to `v22.0.0-SNAPSHOT` after the `v22.0.0-RC3` release [#18206](https://github.com/vitessio/vitess/pull/18206)
 ### Testing 
 #### Backup and Restore
  * fix flaky test on mysqlshell backup engine [#17037](https://github.com/vitessio/vitess/pull/17037)

changelog/22.0/22.0.0/release_notes.md

@@ -376,7 +376,7 @@ Full details on the node v20.12.2 release can be found at https://nodejs.org/en/
 ------------
 The entire changelog for this release can be found [here](https://github.com/vitessio/vitess/blob/main/changelog/22.0/22.0.0/changelog.md).
 
-The release includes 474 merged Pull Requests.
+The release includes 475 merged Pull Requests.
 
 Thanks to all our contributors: @GrahamCampbell, @GuptaManan100, @L3o-pold, @akagami-harsh, @anirbanmu, @app/dependabot, @app/vitess-bot, @arthmis, @arthurschreiber, @beingnoble03, @c-r-dev, @corbantek, @dbussink, @deepthi, @derekperkins, @ejortegau, @frouioui, @garfthoffman, @gmpify, @gopoto, @harshit-gangal, @huochexizhan, @jeefy, @jwangace, @kbutz, @lmorduch, @mattlord, @mattrobenolt, @maxenglander, @mcrauwel, @mounicasruthi, @niladrix719, @notfelineit, @rafer, @rohit-nayak-ps, @rvrangel, @shailpujan88, @shanth96, @shlomi-noach, @siadat, @systay, @timvaillancourt, @twthorn, @vitess-bot, @vmg, @wiebeytec, @wukuai