ci: drop ubuntu-18.04, add ubuntu-22.04 and ubuntu-latest

[imomaliev]

add support for ubuntu 22.04

• starting with 8 of August 2022 support for ubuntu 18.04 is deprecated
• ubuntu 22.04 is generally available

---

This PR was made as a part of blog post The strongest principle of the blog's growth lies in the human choice to deploy it

[codecov[bot]]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage :thumbsup:

Coverage data is based on head (9ef8eed) compared to base (11bede6). Patch has no changes to coverable lines.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #603 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 7 7 Lines 140 140 Branches 20 20 ========================================= Hits 140 140 ``` Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Shohei+Ueda). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Shohei+Ueda)

:umbrella: View full report at Codecov.
:loudspeaker: Do you have feedback about the report comment? Let us know in this issue.

[imomaliev]

@peaceiris It is waiting for tests on ubuntu-18.04. Is there some configuration from third party tools that checks on this step?

[peaceiris]

It is waiting for tests on ubuntu-18.04. Is there some configuration from third party tools that checks on this step?

I will update the branch protection rule 👍 (done)

[imomaliev]

@peaceiris Great! thanks for the fast review)