[main] Copy v18.0.7 release notes (#16746)

Signed-off-by: Shlomi Noach <2607934+shlomi-noach@users.noreply.github.com>

changelog/18.0/18.0.7/changelog.md

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+# Changelog of Vitess v18.0.7
+
+### Bug fixes 
+#### Query Serving
+ * [release-18.0] bugfix: don't treat join predicates as filter predicates (#16472) [#16473](https://github.com/vitessio/vitess/pull/16473)
+ * [release-18.0] Fix RegisterNotifier to use a copy of the tables to prevent data races (#14716) [#16490](https://github.com/vitessio/vitess/pull/16490)
+ * [release-18.0] fix: reference table join merge (#16488) [#16495](https://github.com/vitessio/vitess/pull/16495)
+ * [release-18.0] simplify merging logic (#16525) [#16531](https://github.com/vitessio/vitess/pull/16531)
+ * [release-18.0] Fix query plan cache misses metric (#16562) [#16626](https://github.com/vitessio/vitess/pull/16626)
+ * [release-18.0] JSON Encoding: Use Type_RAW for marshalling json (#16637) [#16680](https://github.com/vitessio/vitess/pull/16680) 
+#### Throttler
+ * v18 backport: Throttler/vreplication: fix app name used by VPlayer (#16578) [#16581](https://github.com/vitessio/vitess/pull/16581) 
+#### VReplication
+ * [release-18.0] VStream API: validate that last PK has fields defined (#16478) [#16485](https://github.com/vitessio/vitess/pull/16485) 
+#### VTAdmin
+ * [release-18.0] VTAdmin: Upgrade websockets js package (#16504) [#16511](https://github.com/vitessio/vitess/pull/16511) 
+#### VTGate
+ * [release-18.0] Fix `RemoveTablet` during `TabletExternallyReparented` causing connection issues (#16371) [#16566](https://github.com/vitessio/vitess/pull/16566) 
+#### VTorc
+ * [release-18.0] FindErrantGTIDs: superset is not an errant GTID situation (#16725) [#16727](https://github.com/vitessio/vitess/pull/16727)
+### CI/Build 
+#### General
+ * [release-18.0] Upgrade the Golang version to `go1.21.13` [#16545](https://github.com/vitessio/vitess/pull/16545)
+ * [release-18.0] Bump upgrade tests to `go1.22.7` [#16722](https://github.com/vitessio/vitess/pull/16722) 
+#### VTAdmin
+ * [release-18.0] Update micromatch to 4.0.8 (#16660) [#16665](https://github.com/vitessio/vitess/pull/16665)
+### Enhancement 
+#### Build/CI
+ * [release-18.0] Improve the queries upgrade/downgrade CI workflow by using same test code version as binary (#16494) [#16500](https://github.com/vitessio/vitess/pull/16500) 
+#### Online DDL
+ * v18 backport: Online DDL: avoid SQL's `CONVERT(...)`, convert programmatically if needed [#16604](https://github.com/vitessio/vitess/pull/16604)
+ * [release-18.0] VReplication workflows: retry "wrong tablet type" errors (#16645) [#16651](https://github.com/vitessio/vitess/pull/16651)
+### Internal Cleanup 
+#### Build/CI
+ * [release-18.0] Move from 4-cores larger runners to `ubuntu-latest` (#16714) [#16716](https://github.com/vitessio/vitess/pull/16716)
+### Regression 
+#### Query Serving
+ * [release-18.0] bugfix: Allow cross-keyspace joins (#16520) [#16522](https://github.com/vitessio/vitess/pull/16522)
+### Release 
+#### General
+ * [release-18.0] Bump to `v18.0.7-SNAPSHOT` after the `v18.0.6` release [#16454](https://github.com/vitessio/vitess/pull/16454)
+### Testing 
+#### Query Serving
+ * [release-18.0] Replace ErrorContains checks with Error checks before running upgrade downgrade [#16701](https://github.com/vitessio/vitess/pull/16701)
+

changelog/18.0/18.0.7/release_notes.md

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+# Release of Vitess v18.0.7
+The entire changelog for this release can be found [here](https://github.com/vitessio/vitess/blob/main/changelog/18.0/18.0.7/changelog.md).
+
+The release includes 21 merged Pull Requests.
+
+Thanks to all our contributors: @GuptaManan100, @app/vitess-bot, @frouioui, @shlomi-noach, @vitess-bot
+

changelog/18.0/README.md

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 ## v18.0
+* **[18.0.7](18.0.7)**
+ * [Changelog](18.0.7/changelog.md)
+ * [Release Notes](18.0.7/release_notes.md)
+
 * **[18.0.6](18.0.6)**
  * [Changelog](18.0.6/changelog.md)
  * [Release Notes](18.0.6/release_notes.md)