Bump vmactions/freebsd-vm from 1.2.7 to 1.2.8

Bumps [vmactions/freebsd-vm](https://github.com/vmactions/freebsd-vm) from 1.2.7 to 1.2.8.
- [Release notes](https://github.com/vmactions/freebsd-vm/releases)
- [Commits](https://github.com/vmactions/freebsd-vm/compare/v1.2.7...v1.2.8)

---
updated-dependencies:
- dependency-name: vmactions/freebsd-vm
  dependency-version: 1.2.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/build.yml

@@ -741,7 +741,7 @@ jobs:
         submodules: recursive
     - name: Build FreeBSD
       id: build-freebsd
-      uses: vmactions/freebsd-vm@v1.2.7
+      uses: vmactions/freebsd-vm@v1.2.8
       with:
         usesh: true
         mem: 4096