Bump scala-compiler from 2.11.8 to 2.11.12 in /scala-package

Bumps [scala-compiler](https://github.com/scala/scala) from 2.11.8 to 2.11.12.
- [Release notes](https://github.com/scala/scala/releases)
- [Commits](https://github.com/scala/scala/compare/v2.11.8...v2.11.12)

---
updated-dependencies:
- dependency-name: org.scala-lang:scala-compiler
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/scala-package/pom.xml b/scala-package/pom.xml
index 86d8cfc..3436fa6 100644
--- a/scala-package/pom.xml
+++ b/scala-package/pom.xml
@@ -48,7 +48,7 @@
   </developers>
 
   <properties>
-    <scala.version>2.11.8</scala.version>
+    <scala.version>2.11.12</scala.version>
     <scala.binary.version>2.11</scala.binary.version>
   </properties>