Update dependency org.jetbrains.kotlinx:kotlinx-serialization-bom to v1.8.1

Author: renovate[bot]

gradle/libs.versions.toml

@@ -8,7 +8,7 @@ jvm = "11"
 ## Libs
 
 kafka = "3.6.1"                         # https://kafka.apache.org/downloads
-kotlinx-serialization = "1.6.2"         # https://github.com/Kotlin/kotlinx.serialization/releases/tag/v1.3.3
+kotlinx-serialization = "1.8.1"         # https://github.com/Kotlin/kotlinx.serialization/releases/tag/v1.3.3
 kotlinx-knit = "0.5.1"                  # https://github.com/Kotlin/kotlinx-knit/releases
 kotlin-dokka = "1.9.10"                 # https://search.maven.org/artifact/org.jetbrains.dokka/dokka-gradle-plugin