Bump io.element.android:wysiwyg from 2.2.2 to 2.9.0

Bumps [io.element.android:wysiwyg](https://github.com/matrix-org/matrix-wysiwyg) from 2.2.2 to 2.9.0.
- [Changelog](https://github.com/matrix-org/matrix-rich-text-editor/blob/main/CHANGELOG.md)
- [Commits](matrix-org/matrix-rich-text-editor@2.2.2...2.9.0)

---
updated-dependencies:
- dependency-name: io.element.android:wysiwyg
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

dependencies.gradle

@@ -101,7 +101,7 @@ ext.libs = [
         ],
         element     : [
                 'opusencoder'             : "io.element.android:opusencoder:1.1.0",
-                'wysiwyg'                 : "io.element.android:wysiwyg:2.2.2"
+                'wysiwyg'                 : "io.element.android:wysiwyg:2.9.0"
         ],
         squareup    : [
                 'moshi'                  : "com.squareup.moshi:moshi:$moshi",