Update V.gradle to v8

Author: renovate[bot]

build.sbt

@@ -15,7 +15,7 @@ lazy val V =
     val coursier = "2.1.9"
     val scalaXml = "2.1.0"
     val moped = "0.2.0"
-    val gradle = "7.0"
+    val gradle = "8.11.1"
     val scala213 = "2.13.13"
     val scala3 = "3.3.3"
     val metals = "1.2.2"