Build(deps): Bump dita-ot/dita-ot-action from 4.3.5 to 4.4

Bumps [dita-ot/dita-ot-action](https://github.com/dita-ot/dita-ot-action) from 4.3.5 to 4.4.
- [Release notes](https://github.com/dita-ot/dita-ot-action/releases)
- [Commits](dita-ot/dita-ot-action@4.3.5...4.4)

---
updated-dependencies:
- dependency-name: dita-ot/dita-ot-action
  dependency-version: '4.4'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/tests.yaml

@@ -123,7 +123,7 @@ jobs:
     - name: Generate docs
       run: bundle exec rake docs:all
     - name: Docs test
-      uses: dita-ot/dita-ot-action@4.3.5
+      uses: dita-ot/dita-ot-action@4.4
       with:
         build: dita -i documentation/bolt.ditamap -o out -f html5 --processing-mode=strict