Update TFLint plugin terraform-linters/tflint-ruleset-aws to v0.21.1

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
terraform-linters/tflint-ruleset-aws	plugin	minor	0.18.0 -> 0.21.1

---

Release Notes

terraform-linters/tflint-ruleset-aws

### [`v0.21.1`](https://togithub.com/terraform-linters/tflint-ruleset-aws/blob/HEAD/CHANGELOG.md#​0211-2022-12-12) [Compare Source](https://togithub.com/terraform-linters/tflint-ruleset-aws/compare/v0.21.0...v0.21.1) ##### BugFixes - [#​430](https://togithub.com/terraform-linters/tflint-ruleset-aws/pull/430): `elasticache_cluster_previous_type`: fix panic on empty string ([@​bendrucker](https://togithub.com/bendrucker)) ##### Chores - [#​407](https://togithub.com/terraform-linters/tflint-ruleset-aws/pull/407): autogenerated maintenance ### [`v0.21.0`](https://togithub.com/terraform-linters/tflint-ruleset-aws/blob/HEAD/CHANGELOG.md#​0210-2022-12-05) [Compare Source](https://togithub.com/terraform-linters/tflint-ruleset-aws/compare/v0.20.0...v0.21.0) ##### Enhancements - [#​403](https://togithub.com/terraform-linters/tflint-ruleset-aws/pull/403): autogenerated maintenance - [#​405](https://togithub.com/terraform-linters/tflint-ruleset-aws/pull/405) [#​406](https://togithub.com/terraform-linters/tflint-ruleset-aws/pull/406): Add assume role configuration to plugin config ([@​kaito3desuyo](https://togithub.com/kaito3desuyo)) ### [`v0.20.0`](https://togithub.com/terraform-linters/tflint-ruleset-aws/blob/HEAD/CHANGELOG.md#​0200-2022-11-27) [Compare Source](https://togithub.com/terraform-linters/tflint-ruleset-aws/compare/v0.19.0...v0.20.0) ##### Enhancements - [#​400](https://togithub.com/terraform-linters/tflint-ruleset-aws/pull/400): autogenerated maintenance ##### Chores - [#​399](https://togithub.com/terraform-linters/tflint-ruleset-aws/pull/399): Bump up GoReleaser version in release.yml ([@​wata727](https://togithub.com/wata727)) - [#​401](https://togithub.com/terraform-linters/tflint-ruleset-aws/pull/401): Bump golang.org/x/net from 0.1.0 to 0.2.0 ### [`v0.19.0`](https://togithub.com/terraform-linters/tflint-ruleset-aws/blob/HEAD/CHANGELOG.md#​0190-2022-11-14) [Compare Source](https://togithub.com/terraform-linters/tflint-ruleset-aws/compare/v0.18.0...v0.19.0) ##### Enhancements - [#​390](https://togithub.com/terraform-linters/tflint-ruleset-aws/pull/390): autogenerated maintenance ##### BugFixes - [#​397](https://togithub.com/terraform-linters/tflint-ruleset-aws/pull/397): Prefer credentials in "plugin" blocks over "provider" blocks ([@​wata727](https://togithub.com/wata727)) ##### Chores - [#​394](https://togithub.com/terraform-linters/tflint-ruleset-aws/pull/394): Add signatures for keyless signing ([@​wata727](https://togithub.com/wata727)) - [#​395](https://togithub.com/terraform-linters/tflint-ruleset-aws/pull/395): Bump github.com/hashicorp/hcl/v2 from 2.14.1 to 2.15.0 - [#​398](https://togithub.com/terraform-linters/tflint-ruleset-aws/pull/398): Bump up GoReleaser version ([@​wata727](https://togithub.com/wata727))

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.