Bump cd.go.plugin:go-plugin-api from 23.3.0 to 23.4.0

Bumps [cd.go.plugin:go-plugin-api](https://github.com/gocd/gocd) from 23.3.0 to 23.4.0.
- [Release notes](https://github.com/gocd/gocd/releases)
- [Commits](gocd/gocd@23.3.0...23.4.0)

---
updated-dependencies:
- dependency-name: cd.go.plugin:go-plugin-api
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle

@@ -51,7 +51,7 @@ java {
 
 ext {
     deps = [
-        gocdPluginApi: 'cd.go.plugin:go-plugin-api:23.3.0',
+        gocdPluginApi: 'cd.go.plugin:go-plugin-api:23.4.0',
         awsSdk       : 'com.amazonaws:aws-java-sdk:1.12.575',
         slf4j        : 'org.slf4j:slf4j-api:2.0.9',
     ]