build(deps-dev): bump @pinia/testing in /build/frontend-legacy

Bumps [@pinia/testing](https://github.com/vuejs/pinia) from 0.1.7 to 1.0.3.
- [Release notes](https://github.com/vuejs/pinia/releases)
- [Commits](https://github.com/vuejs/pinia/compare/@pinia/[email protected]...@pinia/[email protected])

---
updated-dependencies:
- dependency-name: "@pinia/testing"
  dependency-version: 1.0.3
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

build/frontend-legacy/package-lock.json

@@ -109,7 +109,7 @@
     "@nextcloud/babel-config": "^1.3.0",
     "@nextcloud/typings": "^1.9.1",
     "@nextcloud/webpack-vue-config": "^7.0.1",
-    "@pinia/testing": "^0.1.7",
+    "@pinia/testing": "^1.0.3",
     "@testing-library/jest-dom": "^6.6.4",
     "@testing-library/user-event": "^14.6.1",
     "@testing-library/vue": "^5.8.3",