Fix: updated GitHub action to make reviewdog compatible with "new-from-rev" option

[hmoog]

Description of change

GitHub only checks out the committed revision when using checkout@v2. This prevents golangci-lint to use the new-from-rev option since the revision to compare to does not exist. This PR configures checkout to pull all revisions.

Type of change

• Bug fix (a non-breaking change which fixes an issue)

Change checklist

• My code follows the contribution guidelines for this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes