Bump akka-actor_2.12 from 2.5.12 to 2.5.16

Bumps [akka-actor_2.12](https://github.com/akka/akka) from 2.5.12 to 2.5.16.
- [Release notes](https://github.com/akka/akka/releases)
- [Commits](akka/akka-core@v2.5.12...v2.5.16)

---
updated-dependencies:
- dependency-name: com.typesafe.akka:akka-actor_2.12
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pom.xml

@@ -115,7 +115,7 @@
     <mqtt.paho.client>1.1.0</mqtt.paho.client>
     <!-- Streaming Akka connector -->
     <akka.group>com.typesafe.akka</akka.group>
-    <akka.version>2.5.12</akka.version>
+    <akka.version>2.5.16</akka.version>
 
     <protobuf.version>3.16.3</protobuf.version>
     <jsr305.version>3.0.1</jsr305.version>