Bump path-to-regexp from 1.7.0 to 1.9.0 in /addons/addon-ligatures

Bumps [path-to-regexp](https://github.com/pillarjs/path-to-regexp) from 1.7.0 to 1.9.0.
- [Release notes](https://github.com/pillarjs/path-to-regexp/releases)
- [Changelog](https://github.com/pillarjs/path-to-regexp/blob/master/History.md)
- [Commits](pillarjs/path-to-regexp@v1.7.0...v1.9.0)

---
updated-dependencies:
- dependency-name: path-to-regexp
  dependency-type: indirect
...

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

addons/addon-ligatures/yarn.lock

@@ -210,8 +210,9 @@ opentype.js@^0.8.0:
     tiny-inflate "^1.0.2"
 
 path-to-regexp@^1.7.0:
-  version "1.7.0"
-  resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-1.7.0.tgz#59fde0f435badacba103a84e9d3bc64e96b9937d"
+  version "1.9.0"
+  resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-1.9.0.tgz#5dc0753acbf8521ca2e0f137b4578b917b10cf24"
+  integrity sha512-xIp7/apCFJuUHdDLWe8O1HIkb0kQrOMb/0u6FXQjemHn/ii5LrIzU6bdECnsiTF/GjZkMEKg1xdiZwNqDYlZ6g==
   dependencies:
     isarray "0.0.1"