Bump node-fetch and i18next-http-backend in /VocaDbWeb

Bumps [node-fetch](https://github.com/node-fetch/node-fetch) and [i18next-http-backend](https://github.com/i18next/i18next-http-backend). These dependencies needed to be updated together.

Updates `node-fetch` from 2.6.1 to 2.6.7
- [Release notes](https://github.com/node-fetch/node-fetch/releases)
- [Commits](node-fetch/node-fetch@v2.6.1...v2.6.7)

Updates `i18next-http-backend` from 1.2.6 to 1.4.1
- [Release notes](https://github.com/i18next/i18next-http-backend/releases)
- [Commits](i18next/i18next-http-backend@v1.2.6...v1.4.1)

---
updated-dependencies:
- dependency-name: node-fetch
  dependency-type: indirect
- dependency-name: i18next-http-backend
  dependency-type: direct:production
...

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

Author: dependabot[bot]

VocaDbWeb/package-lock.json

@@ -69,7 +69,7 @@
         "highcharts-react-official": "^3.1.0",
         "http-status-codes": "^2.2.0",
         "i18next": "^20.3.2",
-        "i18next-http-backend": "^1.2.6",
+        "i18next-http-backend": "^1.4.1",
         "jquery": "^2.2.1",
         "jquery-ui": "^1.10.4",
         "jqwidgets-scripts": "^13.2.0",