Bump iso-639-1 from 2.1.15 to 3.1.2

Bumps [iso-639-1](https://github.com/meikidd/iso-639-1) from 2.1.15 to 3.1.2.
- [Release notes](https://github.com/meikidd/iso-639-1/releases)
- [Changelog](https://github.com/meikidd/iso-639-1/blob/master/CHANGELOG.md)
- [Commits](https://github.com/meikidd/iso-639-1/commits)

---
updated-dependencies:
- dependency-name: iso-639-1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

package.json

@@ -48,7 +48,7 @@
  "highlight.js": "^11.9.0",
  "html-to-text": "^9.0.5",
  "i18next": "^21.10.0",
- "iso-639-1": "^2.1.15",
+ "iso-639-1": "^3.1.2",
  "moment": "^2.29.4",
  "prismjs": "^1.29.0",
  "prop-types": "^15.8.1",