pom.xml: update Robot Framework to 3.0.2

Changelogs:
- https://github.com/robotframework/robotframework/blob/master/doc/releasenotes/rf-3.0.1.rst
- https://github.com/robotframework/robotframework/blob/master/doc/releasenotes/rf-3.0.2.rst

This also updates robotframework-maven-plugin to 1.4.7

No functional changes.

Author: php-coder

pom.xml

@@ -488,9 +488,9 @@
 		<!-- Dependency can be safely removed when pmd plugin will require this version -->
 		<pmd.version>5.5.2</pmd.version>
 		<resources.plugin.version>3.0.2</resources.plugin.version>
-		<robotframework-plugin.version>1.4.6</robotframework-plugin.version>
+		<robotframework-plugin.version>1.4.7</robotframework-plugin.version>
 		<robotframework-selenium.version>1.4.0.8</robotframework-selenium.version>
-		<robotframework.version>3.0</robotframework.version>
+		<robotframework.version>3.0.2</robotframework.version>
 
 		<!-- Don't forget to update version in the Url class -->
 		<selectizejs.version>0.12.3</selectizejs.version>