Bump ch.qos.logback:logback-core from 1.2.13 to 1.3.15 in /oak-parent

Bumps [ch.qos.logback:logback-core](https://github.com/qos-ch/logback) from 1.2.13 to 1.3.15.
- [Commits](qos-ch/logback@v_1.2.13...v_1.3.15)

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

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

Author: dependabot[bot]

oak-parent/pom.xml

@@ -61,7 +61,7 @@
     <mongo.driver.version>3.12.14</mongo.driver.version>
     <slf4j.api.version>1.7.36</slf4j.api.version>
     <slf4j.version>1.7.36</slf4j.version> <!-- sync with logback version -->
-    <logback.version>1.2.13</logback.version>
+    <logback.version>1.3.15</logback.version>
     <h2.version>2.1.214</h2.version>
     <tika.version>1.28.5</tika.version>
     <derby.version>10.15.2.0</derby.version>