Bump moment and rollup-plugin-license

Bumps [moment](https://github.com/moment/moment) and [rollup-plugin-license](https://github.com/mjeanroy/rollup-plugin-license). These dependencies needed to be updated together.

Updates `moment` from 2.29.1 to 2.29.4
- [Release notes](https://github.com/moment/moment/releases)
- [Changelog](https://github.com/moment/moment/blob/develop/CHANGELOG.md)
- [Commits](moment/moment@2.29.1...2.29.4)

Updates `rollup-plugin-license` from 2.5.0 to 2.8.1
- [Release notes](https://github.com/mjeanroy/rollup-plugin-license/releases)
- [Changelog](https://github.com/mjeanroy/rollup-plugin-license/blob/master/CHANGELOG.md)
- [Commits](mjeanroy/rollup-plugin-license@v2.5.0...v2.8.1)

---
updated-dependencies:
- dependency-name: moment
  dependency-type: indirect
- dependency-name: rollup-plugin-license
  dependency-type: direct:development
...

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

package.json

@@ -50,7 +50,7 @@
     "rollup": "^1.30.1",
     "rollup-plugin-babel": "^4.3.3",
     "rollup-plugin-cleanup": "^3.1.1",
-    "rollup-plugin-license": "2.5.0",
+    "rollup-plugin-license": "2.9.1",
     "rollup-plugin-terser": "^5.1.2",
     "sinon": "^7.5.0",
     "tsd": "^0.21.0",