Bump @stripe/stripe-js from 2.1.0 to 2.1.6 in /Frontend (#233)

Bumps [@stripe/stripe-js](https://github.com/stripe/stripe-js) from 2.1.0 to 2.1.6.
- [Release notes](https://github.com/stripe/stripe-js/releases)
- [Commits](stripe/stripe-js@v2.1.0...v2.1.6)

---
updated-dependencies:
- dependency-name: "@stripe/stripe-js"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Frontend/package.json

@@ -24,7 +24,7 @@
   "dependencies": {
     "@dinero.js/currencies": "2.0.0-alpha.14",
     "@stripe/react-stripe-js": "2.1.2",
-    "@stripe/stripe-js": "2.1.0",
+    "@stripe/stripe-js": "2.1.6",
     "@tanstack/react-query": "4.33.0",
     "@tanstack/react-query-devtools": "4.33.0",
     "@thewca/wca-components": "0.5.2",