Bump axios from 0.21.2 to 1.6.0 in /addons/addon-ligatures

Bumps [axios](https://github.com/axios/axios) from 0.21.2 to 1.6.0.
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/v1.x/CHANGELOG.md)
- [Commits](https://github.com/axios/axios/compare/v0.21.2...v1.6.0)

---
updated-dependencies:
- dependency-name: axios
  dependency-type: direct:development
...

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

addons/addon-ligatures/package.json

@@ -36,7 +36,7 @@
   },
   "devDependencies": {
     "@types/sinon": "^5.0.1",
-    "axios": "^0.21.2",
+    "axios": "^1.6.0",
     "mkdirp": "0.5.5",
     "sinon": "6.3.5",
     "yauzl": "^2.10.0"