Bump stripe from 8.3.0 to 8.6.0

Bumps [stripe](https://github.com/stripe/stripe-node) from 8.3.0 to 8.6.0.
- [Release notes](https://github.com/stripe/stripe-node/releases)
- [Changelog](https://github.com/stripe/stripe-node/blob/master/CHANGELOG.md)
- [Commits](https://github.com/stripe/stripe-node/compare/v8.3.0...v8.6.0)

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

package.json

@@ -82,7 +82,7 @@
     "sequelize": "^5.21.3",
     "smooth-scroll": "https://github.com/cferdinandi/smooth-scroll#5.3.7",
     "statsy": "~0.2.0",
-    "stripe": "^8.3.0",
+    "stripe": "^8.6.0",
     "webpack": "^4.29.3",
     "webpack-cli": "^3.3.10",
     "zeroclipboard": "^2.2.0"