[data-plane]: Bump org.scala-lang:scala-reflect in /data-plane

Bumps [org.scala-lang:scala-reflect](https://github.com/scala/scala) from 2.12.15 to 2.13.12.
- [Release notes](https://github.com/scala/scala/releases)
- [Commits](scala/scala@v2.12.15...v2.13.12)

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

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

data-plane/pom.xml

@@ -421,7 +421,7 @@
       <dependency>
         <groupId>org.scala-lang</groupId>
         <artifactId>scala-reflect</artifactId>
-        <version>2.12.15</version>
+        <version>2.13.12</version>
         <scope>test</scope>
       </dependency>
     </dependencies>