Bump HikariCP from 2.6.1 to 3.2.0 in /modules/spock

Bumps [HikariCP](https://github.com/brettwooldridge/HikariCP) from 2.6.1 to 3.2.0.
- [Release notes](https://github.com/brettwooldridge/HikariCP/releases)
- [Changelog](https://github.com/brettwooldridge/HikariCP/blob/dev/CHANGES)
- [Commits](brettwooldridge/HikariCP@HikariCP-2.6.1...HikariCP-3.2.0)

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

Author: dependabot-support

modules/spock/build.gradle

@@ -10,7 +10,7 @@ dependencies {
 
     testCompile project(':mysql')
     testCompile project(':postgresql')
-    testCompile 'com.zaxxer:HikariCP:2.6.1'
+    testCompile 'com.zaxxer:HikariCP:3.2.0'
 
     testRuntime 'org.postgresql:postgresql:42.0.0'
     testRuntime 'mysql:mysql-connector-java:6.0.6'