Bump version.slf4j from 1.7.30 to 1.7.31

Bumps `version.slf4j` from 1.7.30 to 1.7.31.

Updates `slf4j-api` from 1.7.30 to 1.7.31
- [Release notes](https://github.com/qos-ch/slf4j/releases)
- [Commits](https://github.com/qos-ch/slf4j/commits)

Updates `slf4j-simple` from 1.7.30 to 1.7.31
- [Release notes](https://github.com/qos-ch/slf4j/releases)
- [Commits](https://github.com/qos-ch/slf4j/commits)

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

Signed-off-by: dependabot[bot] <[email protected]>

dc-model-jackson/pom.xml

@@ -16,7 +16,7 @@
   <properties>
     <version.commons-beanutils>1.9.4</version.commons-beanutils>
     <version.jackson>2.12.3</version.jackson>
-    <version.slf4j>1.7.30</version.slf4j>
+    <version.slf4j>1.7.31</version.slf4j>
     <version.wdtk-datamodel>0.11.1</version.wdtk-datamodel>
 
     <!-- Plugin versions -->