Bump dmacvicar/libvirt from 0.7.6 to 0.8.0 in /terraform

Bumps [dmacvicar/libvirt](https://github.com/dmacvicar/terraform-provider-libvirt) from 0.7.6 to 0.8.0.
- [Release notes](https://github.com/dmacvicar/terraform-provider-libvirt/releases)
- [Changelog](https://github.com/dmacvicar/terraform-provider-libvirt/blob/main/CHANGELOG.md)
- [Commits](dmacvicar/terraform-provider-libvirt@v0.7.6...v0.8.0)

---
updated-dependencies:
- dependency-name: dmacvicar/libvirt
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

terraform/main.tf

@@ -3,7 +3,7 @@ terraform {
   required_version = ">= 0.13"
   required_providers {
     libvirt = {
-      version = "0.7.6"
+      version = "0.8.0"
       source  = "registry.terraform.io/dmacvicar/libvirt"
     }
   }