Bump mem from 1.1.0 to 4.3.0 (#65)

Bumps [mem](https://github.com/sindresorhus/mem) from 1.1.0 to 4.3.0.
- [Release notes](https://github.com/sindresorhus/mem/releases)
- [Commits](sindresorhus/memoize@v1.1.0...v4.3.0)

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

Author: dependabot[bot]