Bump com.mysql:mysql-connector-j from 9.6.0 to 9.7.0 in /Plan

Bumps [com.mysql:mysql-connector-j](https://github.com/mysql/mysql-connector-j) from 9.6.0 to 9.7.0.
- [Changelog](https://github.com/mysql/mysql-connector-j/blob/release/9.x/CHANGES)
- [Commits](mysql/mysql-connector-j@9.6.0...9.7.0)

---
updated-dependencies:
- dependency-name: com.mysql:mysql-connector-j
  dependency-version: 9.7.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Plan/build.gradle

@@ -70,7 +70,7 @@ subprojects {
         caffeineVersion = "3.2.3"
         jetbrainsAnnotationsVersion = "26.1.0"
         jettyVersion = "11.0.26"
-        mysqlVersion = "9.6.0"
+        mysqlVersion = "9.7.0"
         mariadbVersion = "3.5.8"
         sqliteVersion = "3.42.0.1"
         adventureVersion = "4.24.0"