Bump nexus-staging-maven-plugin from 1.6.11 to 1.6.12 (#420)

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
...

Signed-off-by: dependabot[bot] <support@github.com>

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

pom.xml

@@ -70,7 +70,7 @@
     <maven-surefire.version>3.0.0-M5</maven-surefire.version>
     <mockito.version>4.3.1</mockito.version>
     <mockk.version>1.12.2</mockk.version>
-    <nexus-staging-maven-plugin.version>1.6.11</nexus-staging-maven-plugin.version>
+    <nexus-staging-maven-plugin.version>1.6.12</nexus-staging-maven-plugin.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <reproducible-build-maven-plugin.version>0.15</reproducible-build-maven-plugin.version>