[deps] Update uwsgi requirement in /images/openwisp_base

Updates the requirements on [uwsgi](https://uwsgi-docs.readthedocs.io/en/latest/) to permit the latest version.

---
updated-dependencies:
- dependency-name: uwsgi
  dependency-version: 2.0.30
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Federico Capoano <[email protected]>

Author: dependabot[bot]

images/openwisp_base/requirements.txt

@@ -6,7 +6,7 @@ sentry-sdk
 supervisor~=4.2  # allows 4.x and > 4.2
 django-cors-headers~=4.7
 django-pipeline~=4.0
-uwsgi~=2.0.29
+uwsgi~=2.0.30
 django-celery-email~=3.0.0
 tldextract~=5.3.0
 # these add support for object storage