build(deps): bump python-decouple from 3.7 to 3.8 (from PR #3183)

Bumps [python-decouple](https://github.com/henriquebastos/python-decouple) from 3.7 to 3.8.
- [Release notes](https://github.com/henriquebastos/python-decouple/releases)
- [Changelog](https://github.com/HBNetwork/python-decouple/blob/master/CHANGELOG.md)
- [Commits](https://github.com/henriquebastos/python-decouple/compare/v3.7...v3.8)

requirements.txt

@@ -22,7 +22,7 @@ markus[datadog]==4.1.0
 pem==21.2.0
 psycopg2==2.9.5
 PyJWT==2.6.0
-python-decouple==3.7
+python-decouple==3.8
 pyOpenSSL==23.0.0
 requests==2.28.2
 sentry-sdk==1.16.0