Update Go version and dependencies in go.mod and go.sum

Use atomic pointer for map access synchronization (#12)

* use atomic pointer for map access synchronization

Signed-off-by: Vladislav Yarmak <[email protected]>

* restore coverage

Signed-off-by: Vladislav Yarmak <[email protected]>

---------

Signed-off-by: Vladislav Yarmak <[email protected]>

Bump golang.org/x/crypto from 0.6.0 to 0.17.0 (#11)

Bumps [golang.org/x/crypto](https://github.com/golang/crypto) from 0.6.0 to 0.17.0.
- [Commits](golang/crypto@v0.6.0...v0.17.0)

---
updated-dependencies:
- dependency-name: golang.org/x/crypto
  dependency-type: direct:production
...

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

fix lint

Update go.yml

add cover to test

Add github action

move to go1.12 mod