Bump certifi from 2018.8.24 to 2022.12.7

Bumps [certifi](https://github.com/certifi/python-certifi) from 2018.8.24 to 2022.12.7.
- [Release notes](https://github.com/certifi/python-certifi/releases)
- [Commits](certifi/python-certifi@2018.08.24...2022.12.07)

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

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

Author: dependabot[bot]

requirements.txt

@@ -6,7 +6,7 @@ Quandl==3.4.5
 asn1crypto==0.24.0
 backcall==0.1.0
 beautifulsoup4==4.6.3
-certifi==2018.8.24
+certifi==2022.12.7
 cffi==1.11.5
 chardet==3.0.4
 cryptography==3.3.2