Run tflint with reviewdog

Version updated for reviewdog/action-tflint to version v1.21.0.

• This action is used across all versions by 535 repositories.

Go to the GitHub Marketplace to find the latest changes.

Release notes

What’s Changed

• chore(deps): update hashicorp/setup-terraform action to v3 by @renovate in https://github.com/reviewdog/action-tflint/pull/81
• chore(deps): update terraform-linters/tflint-ruleset-azurerm to 0.25.1 by @github-actions in https://github.com/reviewdog/action-tflint/pull/80
• chore(deps): update reviewdog/reviewdog to 0.16.0 by @github-actions in https://github.com/reviewdog/action-tflint/pull/82

Full Changelog: https://github.com/reviewdog/action-tflint/compare/v1.20.0...v1.21.0

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