Bump com.github.loki4j:loki-logback-appender (#39)

Bumps [com.github.loki4j:loki-logback-appender](https://github.com/loki4j/loki-logback-appender) from 1.5.1 to 2.0.1.
- [Release notes](https://github.com/loki4j/loki-logback-appender/releases)
- [Commits](loki4j/loki-logback-appender@v1.5.1...v2.0.1)

---
updated-dependencies:
- dependency-name: com.github.loki4j:loki-logback-appender
  dependency-version: 2.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

projects/spring-ai/playground-flight-booking/build.gradle.kts

@@ -50,7 +50,7 @@ dependencies {
     runtimeOnly("io.micrometer:micrometer-registry-prometheus")
 
     /* ------------------------------ Logging ------------------------------- */
-    implementation("com.github.loki4j:loki-logback-appender:1.5.1")
+    implementation("com.github.loki4j:loki-logback-appender:2.0.1")
 
     implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:${coroutinesVersion}")
     implementation("org.jetbrains.kotlinx:kotlinx-coroutines-reactor:${coroutinesVersion}")