Merge pull request #223 from bitpay/dependabot/maven/org.apache.maven.plugins-maven-javadoc-plugin-3.5.0

Bump maven-javadoc-plugin from 2.9.1 to 3.5.0

Author: bobbrodie

pom.xml

@@ -79,7 +79,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>2.9.1</version>
+                <version>3.5.0</version>
                 <configuration>
                     <source>8</source>
                 </configuration>