Bump vmactions/freebsd-vm from 1.1.5 to 1.1.8 (#679)

Bumps [vmactions/freebsd-vm](https://github.com/vmactions/freebsd-vm) from 1.1.5 to 1.1.8.
- [Release notes](https://github.com/vmactions/freebsd-vm/releases)
- [Commits](vmactions/freebsd-vm@debf37c...848dac7)

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

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

Author: dependabot[bot]

.github/workflows/build.yml

@@ -160,7 +160,7 @@ jobs:
         run: ./autogen.sh
 
       - name: Build & test
-        uses: vmactions/freebsd-vm@debf37ca7b7fa40e19c542ef7ba30d6054a706a4 # v1.1.5
+        uses: vmactions/freebsd-vm@848dac7e118679d08e2c2f9d42cd96608d834323 # v1.1.8
         with:
           envs: 'CFLAGS_GCC_STYLE'
           usesh: true