Bump actions/checkout from v2 to v2.3.0
Bump actions/checkout from v2 to v2.3.0

Bumps [actions/checkout](https://github.com/actions/checkout) from v2 to v2.3.0.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/master/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v2...b4483adec309c0d01a5435c5e24eb40de5773ad9)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
cxnam/server-configs-nginx