Bump net.logstash.logback:logstash-logback-encoder in /api (#12)

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
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

api/app/build.gradle.kts

@@ -90,7 +90,7 @@ dependencies {
  implementation("org.jdbi:jdbi3-sqlobject")
  implementation("org.jdbi:jdbi3-kotlin")
  implementation("org.jdbi:jdbi3-kotlin-sqlobject")
- implementation("net.logstash.logback:logstash-logback-encoder:7.4")
+ implementation("net.logstash.logback:logstash-logback-encoder:8.0")
 }
 
 application {