Update weconnect requirement from ~=0.20.2 to ~=0.20.3 in /vwsfriend

Updates the requirements on [weconnect](https://github.com/tillsteinbach/WeConnect-python) to permit the latest version.
- [Release notes](https://github.com/tillsteinbach/WeConnect-python/releases)
- [Changelog](https://github.com/tillsteinbach/WeConnect-python/blob/main/CHANGELOG.md)
- [Commits](tillsteinbach/WeConnect-python@v0.20.2...v0.20.3)

---
updated-dependencies:
- dependency-name: weconnect
  dependency-type: direct:production
...

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

vwsfriend/requirements.txt

@@ -1,4 +1,4 @@
-weconnect~=0.20.2
+weconnect~=0.20.3
 HAP-python[QRCode]~=4.1.0
 pypng~=0.0.21
 sqlalchemy~=1.4.23