Copy release notes from release-19.0 into main

This commit was made automatically by the vitess-releaser tool.

See https://github.com/vitessio/vitess-releaser

Signed-off-by: Rohit Nayak <[email protected]>

changelog/19.0/19.0.6/changelog.md

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+# Changelog of Vitess v19.0.6
+
+### Bug fixes 
+#### Query Serving
+ * [release-19.0] bugfix: don't treat join predicates as filter predicates (#16472) [#16474](https://github.com/vitessio/vitess/pull/16474)
+ * [release-19.0] fix: reference table join merge (#16488) [#16496](https://github.com/vitessio/vitess/pull/16496)
+ * [release-19.0] simplify merging logic (#16525) [#16532](https://github.com/vitessio/vitess/pull/16532)
+ * [release-19.0] Fix: Offset planning in hash joins (#16540) [#16551](https://github.com/vitessio/vitess/pull/16551)
+ * [release-19.0] Fix query plan cache misses metric (#16562) [#16627](https://github.com/vitessio/vitess/pull/16627)
+ * [release-19.0] JSON Encoding: Use Type_RAW for marshalling json (#16637) [#16681](https://github.com/vitessio/vitess/pull/16681) 
+#### Throttler
+ * v19 backport: Throttler/vreplication: fix app name used by VPlayer (#16578) [#16580](https://github.com/vitessio/vitess/pull/16580) 
+#### VReplication
+ * [release-19.0] VStream API: validate that last PK has fields defined (#16478) [#16486](https://github.com/vitessio/vitess/pull/16486) 
+#### VTAdmin
+ * [release-19.0] VTAdmin: Upgrade websockets js package (#16504) [#16512](https://github.com/vitessio/vitess/pull/16512) 
+#### VTGate
+ * [release-19.0] Fix `RemoveTablet` during `TabletExternallyReparented` causing connection issues (#16371) [#16567](https://github.com/vitessio/vitess/pull/16567) 
+#### VTorc
+ * [release-19.0] FindErrantGTIDs: superset is not an errant GTID situation (#16725) [#16728](https://github.com/vitessio/vitess/pull/16728)
+### CI/Build 
+#### General
+ * [release-19.0] Upgrade the Golang version to `go1.22.6` [#16543](https://github.com/vitessio/vitess/pull/16543) 
+#### VTAdmin
+ * [release-19.0] Update micromatch to 4.0.8 (#16660) [#16666](https://github.com/vitessio/vitess/pull/16666)
+### Enhancement 
+#### Build/CI
+ * [release-19.0] Improve the queries upgrade/downgrade CI workflow by using same test code version as binary (#16494) [#16501](https://github.com/vitessio/vitess/pull/16501) 
+#### Online DDL
+ * [release-19.0] VReplication workflows: retry "wrong tablet type" errors (#16645) [#16652](https://github.com/vitessio/vitess/pull/16652)
+### Internal Cleanup 
+#### Build/CI
+ * [release-19.0] Move from 4-cores larger runners to `ubuntu-latest` (#16714) [#16717](https://github.com/vitessio/vitess/pull/16717) 
+#### Docker
+ * [release-19.0] Remove mysql57/percona57 bootstrap images (#16620) [#16622](https://github.com/vitessio/vitess/pull/16622)
+### Performance 
+#### Online DDL
+ * v19 backport: Online DDL: avoid SQL's `CONVERT(...)`, convert programmatically if needed [#16603](https://github.com/vitessio/vitess/pull/16603)
+### Regression 
+#### Query Serving
+ * [release-19.0] bugfix: Allow cross-keyspace joins (#16520) [#16523](https://github.com/vitessio/vitess/pull/16523)
+### Release 
+#### General
+ * [release-19.0] Bump to `v19.0.6-SNAPSHOT` after the `v19.0.5` release [#16456](https://github.com/vitessio/vitess/pull/16456)
+### Testing 
+#### Query Serving
+ * [release-19.0] Replace ErrorContains checks with Error checks before running upgrade downgrade [#16700](https://github.com/vitessio/vitess/pull/16700)
+

changelog/19.0/19.0.6/release_notes.md

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+# Release of Vitess v19.0.6
+The entire changelog for this release can be found [here](https://github.com/vitessio/vitess/blob/main/changelog/19.0/19.0.6/changelog.md).
+
+The release includes 21 merged Pull Requests.
+
+Thanks to all our contributors: @GuptaManan100, @app/vitess-bot, @shlomi-noach, @systay, @vitess-bot
+

changelog/19.0/README.md

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 ## v19.0
+* **[19.0.6](19.0.6)**
+	* [Changelog](19.0.6/changelog.md)
+	* [Release Notes](19.0.6/release_notes.md)
+
 * **[19.0.5](19.0.5)**
 	* [Changelog](19.0.5/changelog.md)
 	* [Release Notes](19.0.5/release_notes.md)