Update dependency com.google.guava:guava to v33.6.0-jre

Author: renovate[bot]

build.gradle

@@ -16,7 +16,7 @@ dependencies {
     compileOnly 'org.projectlombok:lombok:1.18.42'
     annotationProcessor 'org.projectlombok:lombok:1.18.42'
 
-    testImplementation group: 'com.google.guava', name: 'guava', version: '33.5.0-jre'
+    testImplementation group: 'com.google.guava', name: 'guava', version: '33.6.0-jre'
     testImplementation group: 'commons-io', name: 'commons-io', version: '2.21.0'
 
     testImplementation 'org.spockframework:spock-core:2.3-groovy-3.0'