Update grpc-core, grpc-inprocess, ... to 1.68.2 (#17)

Author: scala-steward

build.sbt

@@ -22,7 +22,7 @@ lazy val noPublish = List(
 )
 
 lazy val Versions = new {
-  val grpc   = "1.68.1"
+  val grpc   = "1.68.2"
   val http4s = "0.23.29"
   val logback = "1.5.12"
 }