Merge pull request #281 from bitpay/dependabot/maven/org.apache.maven.plugins-maven-javadoc-plugin-3.6.3

Bump org.apache.maven.plugins:maven-javadoc-plugin from 3.5.0 to 3.6.3

Author: bobbrodie

pom.xml

@@ -81,7 +81,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>3.5.0</version>
+                <version>3.6.3</version>
                 <configuration>
                     <source>8</source>
                     <additionalOptions>-notimestamp</additionalOptions>