chore(deps): bump nexus-staging-maven-plugin from 1.6.7 to 1.6.13 (#334)

Bumps nexus-staging-maven-plugin from 1.6.7 to 1.6.13.

---
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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Author: dependabot[bot]

pom.xml

@@ -345,7 +345,7 @@
           <plugin>
             <groupId>org.sonatype.plugins</groupId>
             <artifactId>nexus-staging-maven-plugin</artifactId>
-            <version>1.6.7</version>
+            <version>1.6.13</version>
             <executions>
               <execution>
                 <id>default-deploy</id>