Bump eslint-plugin-testing-library from 6.3.0 to 6.4.0 (#291)

Bumps [eslint-plugin-testing-library](https://github.com/testing-library/eslint-plugin-testing-library) from 6.3.0 to 6.4.0.
- [Release notes](https://github.com/testing-library/eslint-plugin-testing-library/releases)
- [Changelog](https://github.com/testing-library/eslint-plugin-testing-library/blob/main/.releaserc.json)
- [Commits](testing-library/eslint-plugin-testing-library@v6.3.0...v6.4.0)

---
updated-dependencies:
- dependency-name: eslint-plugin-testing-library
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -33,7 +33,7 @@
     "eslint": "^8.57.0",
     "eslint-config-next": "^14.2.15",
     "eslint-config-react-app": "^7.0.1",
-    "eslint-plugin-testing-library": "^6.3.0",
+    "eslint-plugin-testing-library": "^6.4.0",
     "postcss": "^8.4.47",
     "prettier": "^3.3.3",
     "prettier-plugin-tailwindcss": "^0.6.6",