build(deps): bump ktor from 2.3.6 to 2.3.8

Bumps `ktor` from 2.3.6 to 2.3.8.

Updates `io.ktor:ktor-bom` from 2.3.6 to 2.3.8
- [Release notes](https://github.com/ktorio/ktor/releases)
- [Changelog](https://github.com/ktorio/ktor/blob/2.3.8/CHANGELOG.md)
- [Commits](ktorio/ktor@2.3.6...2.3.8)

Updates `io.ktor.plugin` from 2.3.6 to 2.3.8

---
updated-dependencies:
- dependency-name: io.ktor:ktor-bom
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: io.ktor.plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

gradle/libs.versions.toml

@@ -1,6 +1,6 @@
 [versions]
 kotlin = "1.9.21"
-ktor = "2.3.6"
+ktor = "2.3.8"
 hoplite = "2.7.5"
 kondor = "2.1.2"
 confluent = "7.3.3" # FIXME 7.4.0