Bump akkaVersion from 2.6.8 to 2.6.9 (#131)

Bumps `akkaVersion` from 2.6.8 to 2.6.9.

Updates `akka-actor-typed_2.13` from 2.6.8 to 2.6.9
- [Release notes](https://github.com/akka/akka/releases)
- [Commits](akka/akka-core@v2.6.8...v2.6.9)

Updates `akka-actor-testkit-typed_2.13` from 2.6.8 to 2.6.9
- [Release notes](https://github.com/akka/akka/releases)
- [Commits](akka/akka-core@v2.6.8...v2.6.9)

Updates `akka-testkit_2.13` from 2.6.8 to 2.6.9
- [Release notes](https://github.com/akka/akka/releases)
- [Commits](akka/akka-core@v2.6.8...v2.6.9)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

akka/pom.xml

@@ -13,7 +13,7 @@
   <name>Java Examples - Akka</name>
 
   <properties>
-    <akkaVersion>2.6.8</akkaVersion>
+    <akkaVersion>2.6.9</akkaVersion>
     <logbackVersion>1.2.3</logbackVersion>
   </properties>