Bump ch.qos.logback:logback-classic from 1.2.10 to 1.3.12 in /validator

Bumps [ch.qos.logback:logback-classic](https://github.com/qos-ch/logback) from 1.2.10 to 1.3.12.
- [Commits](qos-ch/logback@v_1.2.10...v_1.3.12)

---
updated-dependencies:
- dependency-name: ch.qos.logback:logback-classic
  dependency-type: direct:production
...

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

validator/pom.xml

@@ -56,7 +56,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
-            <version>1.2.10</version>
+            <version>1.3.12</version>
         </dependency>
         <dependency>
             <groupId>ch.qos.logback</groupId>