Bump stripe from 2.76.0 to 9.6.0

Bumps [stripe](https://github.com/stripe/stripe-python) from 2.76.0 to 9.6.0.
- [Release notes](https://github.com/stripe/stripe-python/releases)
- [Changelog](https://github.com/stripe/stripe-python/blob/master/CHANGELOG.md)
- [Commits](stripe/stripe-python@v2.76.0...v9.6.0)

---
updated-dependencies:
- dependency-name: stripe
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

requirements.txt

@@ -67,7 +67,7 @@ rq==1.11.1
 rq-dashboard==0.6.1
 
 # Billing
-stripe==2.76.0
+stripe==9.6.0
 
 # Error Tracking
 raven[flask]