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

@@ -45,7 +45,7 @@ allprojects {
 
 ext {
   deps = [
-    gocdPluginApi: 'cd.go.plugin:go-plugin-api:23.3.0',
+    gocdPluginApi: 'cd.go.plugin:go-plugin-api:23.4.0',
     commonsIo:     'commons-io:commons-io:2.15.0',
     commonsCodec:  'commons-codec:commons-codec:1.16.0',
     httpClient:    'org.apache.httpcomponents:httpclient:4.5.14',