Bump nexus-staging-maven-plugin from 1.6.8 to 1.6.11

Bumps nexus-staging-maven-plugin from 1.6.8 to 1.6.11.

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

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

Author: dependabot[bot]

pom.xml

@@ -97,7 +97,7 @@
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <finalName>stream-perf-test</finalName>
     <maven.packagecloud.wagon.version>0.0.6</maven.packagecloud.wagon.version>
-    <nexus-staging-maven-plugin.version>1.6.8</nexus-staging-maven-plugin.version>
+    <nexus-staging-maven-plugin.version>1.6.11</nexus-staging-maven-plugin.version>
   </properties>
 
   <dependencies>