Bump mysql-connector-java from 8.0.22 to 8.0.25 in /modules/spock (#4093)

Bumps [mysql-connector-java](https://github.com/mysql/mysql-connector-j) from 8.0.22 to 8.0.25.
- [Release notes](https://github.com/mysql/mysql-connector-j/releases)
- [Changelog](https://github.com/mysql/mysql-connector-j/blob/release/8.0/CHANGES)
- [Commits](mysql/mysql-connector-j@8.0.22...8.0.25)

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

modules/spock/build.gradle

@@ -16,7 +16,7 @@ dependencies {
     testCompile 'org.apache.httpcomponents:httpclient:4.5.13'
 
     testRuntime 'org.postgresql:postgresql:42.2.18'
-    testRuntime 'mysql:mysql-connector-java:8.0.22'
+    testRuntime 'mysql:mysql-connector-java:8.0.25'
 
     testCompileClasspath 'org.jetbrains:annotations:20.1.0'
 }