Bump certifi from 2020.4.5.1 to 2022.12.7 in /vantage6-common

Bumps [certifi](https://github.com/certifi/python-certifi) from 2020.4.5.1 to 2022.12.7.
- [Release notes](https://github.com/certifi/python-certifi/releases)
- [Commits](certifi/python-certifi@2020.04.05.1...2022.12.07)

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

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

vantage6-common/requirements.txt

@@ -7,4 +7,4 @@ PyYAML==5.4
 pyfiglet==0.8.post1
 wincertstore==0.2
 contextlib2==0.5.5
-certifi==2020.4.5.1
+certifi==2022.12.7