Bump certifi from 2022.5.18.1 to 2022.6.15

Bumps [certifi](https://github.com/certifi/python-certifi) from 2022.5.18.1 to 2022.6.15.
- [Release notes](https://github.com/certifi/python-certifi/releases)
- [Commits](https://github.com/certifi/python-certifi/compare/2022.05.18.1...2022.06.15)

---
updated-dependencies:
- dependency-name: certifi
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -1,4 +1,4 @@
-certifi==2022.5.18.1
+certifi==2022.6.15
 babel==2.10.3
 flask-babel==2.0.0
 flask==2.1.2