Update picocli to v4.7.6

gradle/libs.versions.toml

@@ -13,7 +13,7 @@ junit = "5.10.2"
 junitPlatform = "1.10.2"
 okhttp = "4.12.0"
 mockito = "4.11.0"
-picocli = "4.7.5"
+picocli = "4.7.6"
 
 [libraries]
 jetty-server = { module = "org.eclipse.jetty:jetty-server", version.ref = "jetty" }