Bump org.scala-lang:scala-library from 2.13.14 to 2.13.15

Bumps [org.scala-lang:scala-library](https://github.com/scala/scala) from 2.13.14 to 2.13.15.
- [Release notes](https://github.com/scala/scala/releases)
- [Commits](scala/scala@v2.13.14...v2.13.15)

---
updated-dependencies:
- dependency-name: org.scala-lang:scala-library
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

json-serde/build.gradle.kts

@@ -41,7 +41,7 @@ dependencies {
     implementation("io.confluent:kafka-schema-registry-client:$confluentVersion")
     implementation("io.confluent:kafka-json-schema-provider:$confluentVersion")
     constraints {
-        implementation("org.scala-lang:scala-library:2.13.14") {
+        implementation("org.scala-lang:scala-library:2.13.15") {
             because("lower versions have security vulnerabilities")
         }
     }