Update dependency org.apache.maven.plugins:maven-gpg-plugin to v3.2.6 (…

…#196)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

pom.xml

@@ -64,7 +64,7 @@
         <java.version>8</java.version>
         <maven-source-plugin.version>3.3.1</maven-source-plugin.version>
         <maven-javadoc-plugin.version>3.10.0</maven-javadoc-plugin.version>
-        <maven-gpg-plugin.version>3.2.5</maven-gpg-plugin.version>
+        <maven-gpg-plugin.version>3.2.6</maven-gpg-plugin.version>
         <nexus-staging-maven-plugin.version>1.7.0</nexus-staging-maven-plugin.version>
         <scalatest.version>3.2.19</scalatest.version>
         <scalatest-maven-plugin.version>2.2.0</scalatest-maven-plugin.version>