Bump hashicorp/setup-terraform from 2 to 3

Bumps [hashicorp/setup-terraform](https://github.com/hashicorp/setup-terraform) from 2 to 3.
- [Release notes](https://github.com/hashicorp/setup-terraform/releases)
- [Changelog](https://github.com/hashicorp/setup-terraform/blob/main/CHANGELOG.md)
- [Commits](hashicorp/setup-terraform@v2...v3)

---
updated-dependencies:
- dependency-name: hashicorp/setup-terraform
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/validate.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: hashicorp/setup-terraform@v2
+      - uses: hashicorp/setup-terraform@v3
         with:
           terraform_version: ${{ matrix.terraform_version }}
       - run: terraform init