Bump net.logstash.logback:logstash-logback-encoder from 7.2 to 8.0

Bumps [net.logstash.logback:logstash-logback-encoder](https://github.com/logfellow/logstash-logback-encoder) from 7.2 to 8.0.
- [Release notes](https://github.com/logfellow/logstash-logback-encoder/releases)
- [Commits](logfellow/logstash-logback-encoder@logstash-logback-encoder-7.2...logstash-logback-encoder-8.0)

---
updated-dependencies:
- dependency-name: net.logstash.logback:logstash-logback-encoder
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

build.gradle.kts

@@ -10,7 +10,7 @@ val kotlin_version = "2.0.21"
 val kotlinx_datetime_version = "0.4.0"
 val kompendium_version = "3.14.4"
 val logback_version = "1.4.12"
-val logstash_version = "7.2"
+val logstash_version = "8.0"
 val prometeus_version = "1.6.3"
 val nav_common_version = "2.2023.01.10_13.49-81ddc732df3a"
 val tjenestespec_version = "1.2020.06.16-14.51-3b45df54f90a"