Bump hashicorp/azurerm from 4.48.0 to 4.51.0 in /terraform (#227)

Bumps [hashicorp/azurerm](https://github.com/hashicorp/terraform-provider-azurerm) from 4.48.0 to 4.51.0.
- [Release notes](https://github.com/hashicorp/terraform-provider-azurerm/releases)
- [Changelog](https://github.com/hashicorp/terraform-provider-azurerm/blob/main/CHANGELOG.md)
- [Commits](hashicorp/terraform-provider-azurerm@v4.48.0...v4.51.0)

---
updated-dependencies:
- dependency-name: hashicorp/azurerm
  dependency-version: 4.51.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]