build(deps): bump stripe/stripe-php from 7.128.0 to 15.4.0

Bumps [stripe/stripe-php](https://github.com/stripe/stripe-php) from 7.128.0 to 15.4.0.
- [Release notes](https://github.com/stripe/stripe-php/releases)
- [Changelog](https://github.com/stripe/stripe-php/blob/master/CHANGELOG.md)
- [Commits](stripe/stripe-php@v7.128.0...v15.4.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

composer.json

@@ -44,7 +44,7 @@
         "cocur/slugify": "^4.0",
         "gesdinet/jwt-refresh-token-bundle": "^1.0",
         "emcconville/google-map-polyline-encoding-tool": "^1.3",
-        "stripe/stripe-php": "^7.7",
+        "stripe/stripe-php": "^15.4",
         "vich/uploader-bundle": "^1.23.1",
         "doctrine/doctrine-migrations-bundle": "^3.0",
         "guzzlehttp/guzzle": "^7.0",