Bump nexus-staging-maven-plugin from 1.6.11 to 1.6.12 (#255)

Bumps nexus-staging-maven-plugin from 1.6.11 to 1.6.12.

---
updated-dependencies:
- dependency-name: org.sonatype.plugins:nexus-staging-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pom.xml

@@ -145,7 +145,7 @@
         <plugin>
           <groupId>org.sonatype.plugins</groupId>
           <artifactId>nexus-staging-maven-plugin</artifactId>
-          <version>1.6.11</version>
+          <version>1.6.12</version>
         </plugin>
       </plugins>
     </pluginManagement>