chore(deps): bump stripe from 9.6.0 to 9.9.0

Bumps [stripe](https://github.com/stripe/stripe-python) from 9.6.0 to 9.9.0.
- [Release notes](https://github.com/stripe/stripe-python/releases)
- [Changelog](https://github.com/stripe/stripe-python/blob/master/CHANGELOG.md)
- [Commits](stripe/stripe-python@v9.6.0...v9.9.0)

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

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

requirements/main.txt

@@ -2084,9 +2084,9 @@ stdlib-list==0.10.0 \
     --hash=sha256:6519c50d645513ed287657bfe856d527f277331540691ddeaf77b25459964a14 \
     --hash=sha256:b3a911bc441d03e0332dd1a9e7d0870ba3bb0a542a74d7524f54fb431256e214
     # via -r requirements/main.in
-stripe==9.6.0 \
-    --hash=sha256:9305d849cea715dc59c5e39d01891475b82e10edb9d95ee1d8189457e5de792f \
-    --hash=sha256:f519f6810ac7f6e096b4faf562c44b1f8e365138441548e4ab0bc93f86368ad7
+stripe==9.9.0 \
+    --hash=sha256:3cf4bab592afecaaff69c12ecb99c8376a00bc22e26ea7130a0596e209bf3e88 \
+    --hash=sha256:c42d8f6b4463a54f3a025581810f4e632e2d5a71de6100fc595d75581f69a492
     # via -r requirements/main.in
 structlog==24.1.0 \
     --hash=sha256:3f6efe7d25fab6e86f277713c218044669906537bb717c1807a09d46bca0714d \