Bump scala.version from 2.10.6 to 2.13.2 in /templates

Bumps `scala.version` from 2.10.6 to 2.13.2.

Updates `scala-library` from 2.10.6 to 2.13.2
- [Release notes](https://github.com/scala/scala/releases)
- [Commits](scala/scala@v2.10.6...v2.13.2)

Updates `scala-compiler` from 2.10.6 to 2.13.2
- [Release notes](https://github.com/scala/scala/releases)
- [Commits](scala/scala@v2.10.6...v2.13.2)

Updates `scala-reflect` from 2.10.6 to 2.13.2
- [Release notes](https://github.com/scala/scala/releases)
- [Commits](scala/scala@v2.10.6...v2.13.2)

Updates `scalap` from 2.10.6 to 2.13.2
- [Release notes](https://github.com/scala/scala/releases)
- [Commits](scala/scala@v2.10.6...v2.13.2)

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

templates/pom.xml

@@ -85,7 +85,7 @@
     <mockito.version>1.10.19</mockito.version>
     <scala.mm.version>2.10</scala.mm.version>
     <!-- Kafka 0.9 requires Scala 2.10.5+ -->
-    <scala.version>2.10.6</scala.version>
+    <scala.version>2.13.2</scala.version>
     <scalatest.version>2.2.1</scalatest.version>
     <scala-maven-plugin.version>3.2.2</scala.maven.plugin.version>
     <slf4j.version>1.7.16</slf4j.version>