Plugin dependency updates

Author: rjeberhard

pom.xml

@@ -48,7 +48,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <apache.http.version>4.5.3</apache.http.version>
         <version.plugin.surefire>3.1.2</version.plugin.surefire>
-        <maven-enforcer-plugin-version>3.3.0</maven-enforcer-plugin-version>
+        <maven-enforcer-plugin-version>3.4.0</maven-enforcer-plugin-version>
         <maven-clean-plugin-version>3.3.1</maven-clean-plugin-version>
         <maven-compiler-plugin-version>3.11.0</maven-compiler-plugin-version>
         <maven-install-plugin-version>3.1.1</maven-install-plugin-version>