Update fs2-grpc-runtime to 2.7.15

Author: 47erbot

project/ProjectPlugin.scala

@@ -24,7 +24,7 @@ object ProjectPlugin extends AutoPlugin {
       val dropwizard: String            = "4.2.25"
       val enumeratum: String            = "1.7.3"
       val fs2: String                   = "3.10.2"
-      val fs2Grpc: String               = "2.7.14"
+      val fs2Grpc: String               = "2.7.15"
       val grpc: String                  = "1.63.0"
       val kindProjector: String         = "0.13.3"
       val log4cats: String              = "2.7.0"