fix(deps): update dependency com.github.ben-manes.caffeine:caffeine to v3.1.8

Author: renovate[bot]

java8/pom.xml

@@ -58,7 +58,7 @@
     <dependency>
       <groupId>com.github.ben-manes.caffeine</groupId>
       <artifactId>caffeine</artifactId>
-      <version>3.1.6</version>
+      <version>3.1.8</version>
     </dependency>
     <dependency>
       <groupId>org.projectlombok</groupId>