Bump actions/cache from v1.2.0 to v2
Bump actions/cache from v1.2.0 to v2

Bumps [actions/cache](https://github.com/actions/cache) from v1.2.0 to v2.
- [Release notes](https://github.com/actions/cache/releases)
- [Commits](https://github.com/actions/cache/compare/v1.2.0...b8204782bbb5f872091ecc5eb9cb7d004e35b1fa)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
staticdev/django-pagination-bootstrap,staticdev/django-pagination-bootstrap