Bump scala.version from 2.12.19 to 2.13.15

Bumps `scala.version` from 2.12.19 to 2.13.15.

Updates `org.scala-lang:scala-library` from 2.12.19 to 2.13.15
- [Release notes](https://github.com/scala/scala/releases)
- [Commits](scala/scala@v2.12.19...v2.13.15)

Updates `org.scala-lang:scala-reflect` from 2.12.19 to 2.13.15
- [Release notes](https://github.com/scala/scala/releases)
- [Commits](scala/scala@v2.12.19...v2.13.15)

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

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -240,7 +240,7 @@
     <google.jsr305.version>3.0.2</google.jsr305.version>
 
     <!-- Configuration for Scala -->
-    <scala.version>2.12.19</scala.version>
+    <scala.version>2.13.15</scala.version>
     <scala.compat.version>2.12</scala.compat.version>
 
     <!-- Solve conflicts and vulnerabilities -->