build(deps): bump io.ktor:ktor-server-content-negotiation

Bumps [io.ktor:ktor-server-content-negotiation](https://github.com/ktorio/ktor) from 2.3.8 to 2.3.9.
- [Release notes](https://github.com/ktorio/ktor/releases)
- [Changelog](https://github.com/ktorio/ktor/blob/2.3.9/CHANGELOG.md)
- [Commits](ktorio/ktor@2.3.8...2.3.9)

---
updated-dependencies:
- dependency-name: io.ktor:ktor-server-content-negotiation
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

app/build.gradle.kts

@@ -33,7 +33,7 @@ dependencies {
 
     implementation("io.ktor:ktor-server-core:2.3.8")
     implementation("io.ktor:ktor-server-netty:2.3.8")
-    implementation("io.ktor:ktor-server-content-negotiation:2.3.8")
+    implementation("io.ktor:ktor-server-content-negotiation:2.3.9")
     implementation("io.ktor:ktor-client-content-negotiation:2.3.8")
     implementation("io.ktor:ktor-serialization-gson:2.3.8")
     implementation("io.ktor:ktor-client-core:2.3.8")