Bump logback-core in /tests/comparisonTest/opentsdb/opentsdbtest (#6403)

Bumps logback-core from 1.0.13 to 1.2.0.

---
updated-dependencies:
- dependency-name: ch.qos.logback:logback-core
  dependency-type: direct:production
...
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tests/comparisonTest/opentsdb/opentsdbtest/pom.xml

@@ -216,7 +216,7 @@
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-core</artifactId>
-      <version>1.0.13</version>
+      <version>1.2.0</version>
     </dependency>
 
     <dependency>