Bump org.jetbrains.kotlinx.kover from 0.8.3 to 0.9.0

Bumps [org.jetbrains.kotlinx.kover](https://github.com/Kotlin/kotlinx-kover) from 0.8.3 to 0.9.0.
- [Release notes](https://github.com/Kotlin/kotlinx-kover/releases)
- [Changelog](https://github.com/Kotlin/kotlinx-kover/blob/main/CHANGELOG.md)
- [Commits](Kotlin/kotlinx-kover@v0.8.3...v0.9.0)

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlinx.kover
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -4,7 +4,7 @@ exposed = "0.57.0"
 firebase-admin = "9.4.2"
 imageio-webp = "0.1.6"
 kotlin = "2.1.0"
-kotlinx-kover = "0.8.3"
+kotlinx-kover = "0.9.0"
 kotlin-serialization = "1.7.3"
 ktor = "3.0.2"
 postgresql = "42.7.4"