Update dependency org.mockito:mockito-core to v5.9.0 (#2551)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

gradle/libs.versions.toml

@@ -46,7 +46,7 @@ text = "3.0.4"
 piston = "0.5.7"
 
 # Tests
-mockito = "5.8.0"
+mockito = "5.9.0"
 
 # Gradle plugins
 pluginyml = "0.6.0"

worldedit-sponge/build.gradle.kts

@@ -28,7 +28,7 @@ dependencies {
     })
     api("org.apache.logging.log4j:log4j-api")
     api("org.bstats:bstats-sponge:1.7")
-    testImplementation("org.mockito:mockito-core:5.8.0")
+    testImplementation("org.mockito:mockito-core:5.9.0")
 }
 
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