Bump es5-ext from 0.10.62 to 0.10.64 in /examples/subscription (#55)

Bumps [es5-ext](https://github.com/medikoo/es5-ext) from 0.10.62 to 0.10.64.
- [Release notes](https://github.com/medikoo/es5-ext/releases)
- [Changelog](https://github.com/medikoo/es5-ext/blob/main/CHANGELOG.md)
- [Commits](medikoo/es5-ext@v0.10.62...v0.10.64)

---
updated-dependencies:
- dependency-name: es5-ext
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>