Merge pull request #157 from akouthoofd/alex/3pp/logback

Upgrade logback to latest version

Author: pteyer

pom.xml

@@ -30,7 +30,7 @@
         <!--VERSIONS-->
         <slf4j.version>1.7.32</slf4j.version>
         <jul.to.slf4j.version>1.7.32</jul.to.slf4j.version>
-        <logback.version>1.2.9</logback.version>
+        <logback.version>1.2.13</logback.version>
         <gson.version>2.9.0</gson.version>
         <grpc.version>1.53.0</grpc.version>
         <guava.version>32.0.0-jre</guava.version>