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/ensure-uptime-checks.yaml

@@ -33,7 +33,7 @@ jobs:
         uses: actions/checkout@v4
 
       # Uptime checks are set up and managed via terraform
-      - uses: hashicorp/setup-terraform@v2
+      - uses: hashicorp/setup-terraform@v3
 
       # We use sops to store encrypted GCP ServiceAccount Key that terraform uses
       # to run, as well as PagerDuty config terraform uses

.github/workflows/terraform-lint.yaml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: hashicorp/setup-terraform@v2
+      - uses: hashicorp/setup-terraform@v3
       - uses: terraform-linters/setup-tflint@v4
       - name: Run terraform linter
         run: |