Bump net.ltgt.gwt.maven:gwt-maven-plugin from 1.2.0 to 1.3.0

Bumps [net.ltgt.gwt.maven:gwt-maven-plugin](https://github.com/tbroyer/gwt-maven-plugin) from 1.2.0 to 1.3.0.
- [Release notes](https://github.com/tbroyer/gwt-maven-plugin/releases)
- [Commits](tbroyer/gwt-maven-plugin@1.2.0...1.3.0)

---
updated-dependencies:
- dependency-name: net.ltgt.gwt.maven:gwt-maven-plugin
  dependency-version: 1.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -101,7 +101,7 @@
         <version.central.publishing.plugin>0.10.0</version.central.publishing.plugin>
         <version.degraph.plugin>4.0.3</version.degraph.plugin>
         <version.editorconfig.plugin>0.2.0</version.editorconfig.plugin>
-        <version.gwt.plugin>1.2.0</version.gwt.plugin>
+        <version.gwt.plugin>1.3.0</version.gwt.plugin>
         <version.impsort.plugin>1.13.0</version.impsort.plugin>
         <version.keepachangelog>2.1.1</version.keepachangelog>
         <version.license.plugin>5.0.0</version.license.plugin>