Bump ch.qos.logback:logback-classic from 1.3.14 to 1.3.15

Bumps [ch.qos.logback:logback-classic](https://github.com/qos-ch/logback) from 1.3.14 to 1.3.15.
- [Release notes](https://github.com/qos-ch/logback/releases)
- [Commits](qos-ch/logback@v_1.3.14...v_1.3.15)

---
updated-dependencies:
- dependency-name: ch.qos.logback:logback-classic
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

build.gradle

@@ -37,7 +37,7 @@ dependencies {
   implementation 'org.ehcache:ehcache:3.10.8'
   implementation 'org.slf4j:slf4j-api:2.0.17'
   // Logback classic 1.3.x is compatible with java 8
-  implementation 'ch.qos.logback:logback-classic:1.3.14'
+  implementation 'ch.qos.logback:logback-classic:1.3.15'
   implementation 'org.jetbrains:annotations:26.0.2'
 
   testImplementation 'cloud.eppo:sdk-common-jvm:3.5.4:tests'