build(deps-dev): bump @sumup/foundry from 6.2.1 to 7.1.1

Bumps [@sumup/foundry](https://github.com/sumup-oss/foundry) from 6.2.1 to 7.1.1.
- [Release notes](https://github.com/sumup-oss/foundry/releases)
- [Changelog](https://github.com/sumup-oss/foundry/blob/main/CHANGELOG.md)
- [Commits](sumup-oss/foundry@v6.2.1...v7.1.1)

---
updated-dependencies:
- dependency-name: "@sumup/foundry"
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

package.json

@@ -26,7 +26,7 @@
     "@rollup/plugin-strip": "^3.0.4",
     "@rollup/plugin-terser": "^0.4.4",
     "@rollup/plugin-typescript": "^11.1.6",
-    "@sumup/foundry": "^6.2.1",
+    "@sumup/foundry": "^7.1.1",
     "@types/jest": "^29.5.12",
     "@types/tti-polyfill": "^0.2.4",
     "cz-conventional-changelog": "3.3.0",