Bump slf4j-mock from 2.1.0 to 2.1.1 (#15)

Bumps [slf4j-mock](https://github.com/s4u/slf4j-mock) from 2.1.0 to 2.1.1.
- [Release notes](https://github.com/s4u/slf4j-mock/releases)
- [Commits](s4u/slf4j-mock@v2.1.0...v2.1.1)

---
updated-dependencies:
- dependency-name: org.simplify4u:slf4j-mock
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]

pom.xml

@@ -74,7 +74,7 @@
     <dependency>
       <groupId>org.simplify4u</groupId>
       <artifactId>slf4j-mock</artifactId>
-      <version>2.1.0</version>
+      <version>2.1.1</version>
       <scope>test</scope>
     </dependency>
     <dependency>