Update dependency org.jetbrains.kotlinx.kover to v0.9.9

| datasource | package                                                               | from  | to    |
| ---------- | --------------------------------------------------------------------- | ----- | ----- |
| maven      | org.jetbrains.kotlinx.kover:org.jetbrains.kotlinx.kover.gradle.plugin | 0.9.8 | 0.9.9 |

Author: renovate[bot]

gradle/libs.versions.toml

@@ -5,7 +5,7 @@ dev-tools = "0.0.3"
 hikari = "7.1.0"
 kjwt = "1.0.0"
 kotlin = "2.4.10"
-kover = "0.9.8"
+kover = "0.9.9"
 ktor = "3.5.1"
 logback = "1.5.38"
 postgresql = "42.7.13"