Update ktor monorepo to v3

Author: renovate[bot]

gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 kotest = "5.8.0"
 kotlinx-coroutines = "1.7.0"
 mockserver-netty = "5.15.0"
-ktor = "1.6.8"
+ktor = "3.0.0"
 
 [libraries]
 kotest-assertions = { module = "io.kotest:kotest-assertions-core", version.ref = "kotest" }