Bump log4j-api from 2.14.1 to 2.17.1

Bumps log4j-api from 2.14.1 to 2.17.1.

---
updated-dependencies:
- dependency-name: org.apache.logging.log4j:log4j-api
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle

@@ -76,7 +76,7 @@ dependencies {
     compile "org.grails.plugins:hibernate5"
     compile "org.grails.plugins:cache"
     compile "org.hibernate:hibernate-ehcache"
-    compile "org.apache.logging.log4j:log4j-api:2.14.1"
+    compile "org.apache.logging.log4j:log4j-api:2.17.1"
     compile group: 'org.apache.logging.log4j', name: 'log4j-core', version: '2.16.0'
     compile "org.elasticsearch:elasticsearch:${elasticsearchVersion}"
     compile group: 'org.elasticsearch.client', name: 'elasticsearch-rest-client', version: elasticsearchVersion