Bump elfinder-client from 2.1.55a6 to 2.1.55a16

Bumps [elfinder-client](https://github.com/imjoy-team/elFinder) from 2.1.55a6 to 2.1.55a16.
- [Changelog](https://github.com/imjoy-team/elFinder/blob/master/Changelog)
- [Commits](https://github.com/imjoy-team/elFinder/commits)

---
updated-dependencies:
- dependency-name: elfinder-client
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements.txt

@@ -1,5 +1,5 @@
 aiofiles==23.1.0
-elfinder-client==2.1.55a6
+elfinder-client==2.1.55a16
 fastapi==0.99.1
 jinja2==3.1.2
 pathvalidate==3.0.0