fix: bump net.logstash.logback:logstash-logback-encoder from 7.4 to 8.0

Bumps [net.logstash.logback:logstash-logback-encoder](https://github.com/logfellow/logstash-logback-encoder) from 7.4 to 8.0.
- [Release notes](https://github.com/logfellow/logstash-logback-encoder/releases)
- [Commits](logfellow/logstash-logback-encoder@logstash-logback-encoder-7.4...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]>

build.gradle.kts

@@ -11,7 +11,7 @@ val jaxbApiVersion = "2.3.1"
 val jsoupVersion = "1.18.1"
 val kluentVersion = "1.72"
 val logbackVersion = "1.5.6"
-val logstashEncoderVersion = "7.4"
+val logstashEncoderVersion = "8.0"
 val openHtmlToPdfVersion = "pdfbox2-65c2c5010f84b2daa5821971c9c68cd330463830"
 val prometheusVersion = "0.16.0"
 val junitJupiterVersion = "5.10.3"