Bump javafx.version from 20.0.2 to 21

Bumps `javafx.version` from 20.0.2 to 21.

Updates `org.openjfx:javafx-controls` from 20.0.2 to 21

Updates `org.openjfx:javafx-fxml` from 20.0.2 to 21

Updates `org.openjfx:javafx-web` from 20.0.2 to 21

Updates `org.openjfx:javafx-media` from 20.0.2 to 21

---
updated-dependencies:
- dependency-name: org.openjfx:javafx-controls
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: org.openjfx:javafx-fxml
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: org.openjfx:javafx-web
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: org.openjfx:javafx-media
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

pom.xml

@@ -24,7 +24,7 @@
         <solr.version>9.2.1</solr.version>
         <tika.version>1.28.5</tika.version>
         <projectrelease.version>3.5.0</projectrelease.version>
-        <javafx.version>20.0.2</javafx.version>
+        <javafx.version>21</javafx.version>
         <corenlp.version>4.5.4</corenlp.version>
         <restlet.version>2.4.3</restlet.version>
         <jetty.version>10.0.13</jetty.version>