Update ktor3 to v3.1.1

Author: renovate[bot]

gradle/libs.versions.toml

@@ -5,7 +5,7 @@ jdkTarget = "8"
 jvmToolchain = "21"
 kotlinTarget = "1.9.0"
 ktor2 = "2.3.13"
-ktor3 = "3.0.1"
+ktor3 = "3.1.1"
 kotlinx-serialization = "1.7.3"
 kotlinx-datetime = "0.6.1"
 poko = "0.18.0"