Bump ch.qos.logback:logback-core in /templates/micronaut (#366)

Bumps [ch.qos.logback:logback-core](https://github.com/qos-ch/logback) from 1.5.15 to 1.5.19.
- [Release notes](https://github.com/qos-ch/logback/releases)
- [Commits](qos-ch/logback@v_1.5.15...v_1.5.19)

---
updated-dependencies:
- dependency-name: ch.qos.logback:logback-core
  dependency-version: 1.5.19
  dependency-type: direct:production
...

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Author: dependabot[bot]

templates/micronaut/pom.xml

@@ -39,7 +39,7 @@
 
     <!-- Additional dependencies -->
     <hamcrest.version>3.0</hamcrest.version>
-    <logback.version>1.5.15</logback.version>
+    <logback.version>1.5.19</logback.version>
     <netty.version>4.1.124.Final</netty.version>
     <jansi.version>2.4.1</jansi.version>