Bump logback-core from 1.2.3 to 1.2.9 in /examples/ispn-dir-copy

Bumps logback-core from 1.2.3 to 1.2.9.

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

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Author: dependabot[bot]

examples/ispn-dir-copy/pom.xml

@@ -68,7 +68,7 @@
     <dependency>
       <groupId>ch.qos.logback</groupId>
       <artifactId>logback-core</artifactId>
-      <version>1.2.3</version>
+      <version>1.2.9</version>
     </dependency>
     <dependency>
       <groupId>ch.qos.logback</groupId>