Bump org.slf4j:slf4j-simple from 2.0.14 to 2.0.15 (#503)

Bumps org.slf4j:slf4j-simple from 2.0.14 to 2.0.15.

---
updated-dependencies:
- dependency-name: org.slf4j:slf4j-simple
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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pom.xml

@@ -113,7 +113,7 @@
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-simple</artifactId>
-            <version>2.0.14</version>
+            <version>2.0.15</version>
             <scope>test</scope>
         </dependency>
         <!-- Used for creating an testcontainer of Redis for testing and comparing behaviour-->