Cleanup go version management by taking go version from go.mod

[avakarev]

Additionally, remove unused strategy-matrix from test job

What kind of change does this PR introduce?

Github workflow actions cleanup

What is the current behavior?

Job actions/setup-go@v5 takes go version to install from the provided string literal

What is the new behavior?

Job actions/setup-go@v5 take go version from go.mod

Additional context

Now there are less things to maintain and less changes need to be done on go version bump.
Additionally, unused strategy-matrix from test job is removed.

[cstockton]

Looks good to me, thanks a lot @avakarev

[avakarev]

Looks good to me, thanks a lot @avakarev

It failed because setup-go struggled to find go.mod before checkout placed it to the filesystem. Fixed the action order, please approve pipeline to re-run.

[coveralls]

Pull Request Test Coverage Report for Build 15025666501

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 69.643%

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Totals
Change from base Build 15005507419:	0.0%
Covered Lines:	10952
Relevant Lines:	15726

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💛 - Coveralls