OPENNLP-1752 Update license-maven-plugin to 2.6.0 (#796)

Bumps [org.codehaus.mojo:license-maven-plugin](https://github.com/mojohaus/license-maven-plugin) from 2.5.0 to 2.6.0.
- [Release notes](https://github.com/mojohaus/license-maven-plugin/releases)
- [Commits](mojohaus/license-maven-plugin@2.5.0...2.6.0)

---
updated-dependencies:
- dependency-name: org.codehaus.mojo:license-maven-plugin
  dependency-version: 2.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

pom.xml

@@ -242,7 +242,7 @@
 		<maven.failsafe.plugin>3.5.3</maven.failsafe.plugin>
 		<maven.javadoc.plugin>3.11.2</maven.javadoc.plugin>
 		<forbiddenapis.plugin>3.9</forbiddenapis.plugin>
-		<license-maven-plugin.version>2.5.0</license-maven-plugin.version>
+		<license-maven-plugin.version>2.6.0</license-maven-plugin.version>
 	</properties>
 
 	<build>