chore(deps): update terraform-linters/setup-tflint action to v6

Author: renovate[bot]

.github/workflows/validate.yml

@@ -16,7 +16,7 @@ jobs:
           ref: ${{ github.event.pull_request.head.ref }}
       - name: Setup Terraform
         uses: hashicorp/setup-terraform@b9cd54a3c349d3f38e8881555d616ced269862dd # v3.1.2
-      - uses: terraform-linters/setup-tflint@ae78205cfffec9e8d93fd2b3115c7e9d3166d4b6 #v5.0.0
+      - uses: terraform-linters/setup-tflint@acd1575d3c037258ce5b2dd01379dc49ce24c6b7 # v6.2.0
         name: Setup TFLint
         with:
           tflint_version: v0.59.1