build(deps): bump @sumup/sdk in /backend/bun in the sumup-sdk group

Bumps the sumup-sdk group in /backend/bun with 1 update: [@sumup/sdk](https://github.com/sumup/sumup-ts).


Updates `@sumup/sdk` from 0.0.11 to 0.0.12
- [Release notes](https://github.com/sumup/sumup-ts/releases)
- [Changelog](https://github.com/sumup/sumup-ts/blob/main/CHANGELOG.md)
- [Commits](sumup/sumup-ts@v0.0.11...v0.0.12)

---
updated-dependencies:
- dependency-name: "@sumup/sdk"
  dependency-version: 0.0.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: sumup-sdk
...

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

Author: dependabot[bot]

backend/bun/package.json

@@ -8,7 +8,7 @@
     "lint:fix": "biome check --write"
   },
   "dependencies": {
-    "@sumup/sdk": "^0.0.11"
+    "@sumup/sdk": "^0.1.1"
   },
   "devDependencies": {
     "@biomejs/biome": "^2.1.2"