build(deps-dev): bump jsdom from 25.0.1 to 26.0.0 in /frontend

Bumps [jsdom](https://github.com/jsdom/jsdom) from 25.0.1 to 26.0.0.
- [Release notes](https://github.com/jsdom/jsdom/releases)
- [Changelog](https://github.com/jsdom/jsdom/blob/main/Changelog.md)
- [Commits](jsdom/jsdom@25.0.1...26.0.0)

---
updated-dependencies:
- dependency-name: jsdom
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

frontend/package-lock.json

@@ -26,7 +26,7 @@
 		"eslint-config-prettier": "^9.1.0",
 		"eslint-plugin-svelte": "^2.46.0",
 		"globals": "^15.11.0",
-		"jsdom": "^25.0.1",
+		"jsdom": "^26.0.0",
 		"prettier": "^3.3.3",
 		"prettier-plugin-svelte": "^3.2.7",
 		"stylelint": "^16.13.2",