chore: upgrade license-maven-plugin to 2.2.0

LICENSE.txt

pom.xml

solidify-authorization-model/LICENSE.txt

solidify-bagit/LICENSE.txt

solidify-citation-model/LICENSE.txt

solidify-citation/LICENSE.txt

solidify-client/LICENSE.txt

solidify-controller/LICENSE.txt

solidify-datacite-model/LICENSE.txt

solidify-doc/LICENSE.txt

solidify-email/LICENSE.txt

solidify-html-model/LICENSE.txt

solidify-index-controller/LICENSE.txt

solidify-index-model/LICENSE.txt

solidify-index/LICENSE.txt

solidify-model/LICENSE.txt

solidify-oai-model/LICENSE.txt

solidify-oai-pmh/LICENSE.txt

solidify-rest-client/LICENSE.txt

solidify-sitemap-model/LICENSE.txt