Update dependency com.github.ben-manes.caffeine:caffeine to v2.9.0

Author: renovate-bot

games-server/build.gradle

@@ -66,7 +66,7 @@ dependencies {
     compile group: 'com.amazonaws', name: 'aws-java-sdk-dynamodb', version: '1.11.879'
     compile group: 'org.postgresql', name: 'postgresql', version: '42.2.14'
     compile 'com.zaxxer:HikariCP:3.4.5'
-    compile 'com.github.ben-manes.caffeine:caffeine:2.8.5'
+    compile 'com.github.ben-manes.caffeine:caffeine:2.9.0'
     compile group: 'ai.djl', name: 'api', version: '0.3.0'
     compile group: 'ai.djl', name: 'model-zoo', version: '0.3.0'
     runtime group: 'ai.djl.mxnet', name: 'mxnet-engine', version: '0.3.0'