Bump kotlin-logging from 2.1.20 to 2.1.21

Bumps [kotlin-logging](https://github.com/MicroUtils/kotlin-logging) from 2.1.20 to 2.1.21.
- [Release notes](https://github.com/MicroUtils/kotlin-logging/releases)
- [Changelog](https://github.com/MicroUtils/kotlin-logging/blob/master/ChangeLog.md)
- [Commits](https://github.com/MicroUtils/kotlin-logging/commits/2.1.21)

---
updated-dependencies:
- dependency-name: io.github.microutils:kotlin-logging
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

build.gradle.kts

@@ -53,7 +53,7 @@ dependencies {
   implementation("org.jetbrains.kotlin:kotlin-stdlib")
   implementation("org.jetbrains.kotlin:kotlin-reflect")
 
-  implementation("io.github.microutils:kotlin-logging:2.1.20")
+  implementation("io.github.microutils:kotlin-logging:2.1.21")
   implementation("org.slf4j:slf4j-api")
   testRuntimeOnly("ch.qos.logback:logback-classic:1.2.9")