Bump logback-core from 1.3.6 to 1.3.7 (#196)

Bumps [logback-core](https://github.com/qos-ch/logback) from 1.3.6 to 1.3.7.
- [Release notes](https://github.com/qos-ch/logback/releases)
- [Commits](qos-ch/logback@v_1.3.6...v_1.3.7)

---
updated-dependencies:
- dependency-name: ch.qos.logback:logback-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

examples/pom.xml

@@ -130,7 +130,7 @@
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-core</artifactId>
-            <version>1.3.6</version> <!-- do not upgrade to 1.4 -->
+            <version>1.3.7</version> <!-- do not upgrade to 1.4 -->
         </dependency>
         <dependency>
             <groupId>org.codehaus.janino</groupId>