Bump qrcode from 8.0 to 8.1 in /requirements

Bumps [qrcode](https://github.com/lincolnloop/python-qrcode) from 8.0 to 8.1.
- [Changelog](https://github.com/lincolnloop/python-qrcode/blob/main/CHANGES.rst)
- [Commits](https://github.com/lincolnloop/python-qrcode/commits)

---
updated-dependencies:
- dependency-name: qrcode
  dependency-version: '8.1'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements/base.txt

@@ -5,7 +5,7 @@ oauth2client==4.1.3
 django-crispy-forms==2.4
 crispy-bootstrap3==2024.1
 django-model-utils==5.0.0
-qrcode==8.0
+qrcode==8.1
 pytz==2025.2
 requests==2.32.3
 psycopg2-binary==2.9.10