FreeBSD CI: 4 vCPUs, git in the VM, pinned vmactions/freebsd-vm

The headless UI snapshot test settles for at most 120 s; on a 2-vCPU VM
under the full test load it timed out mid-render.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.github/workflows/freebsd.yml

@@ -28,15 +28,16 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Build and test in a FreeBSD VM
-        uses: vmactions/freebsd-vm@v1
+        uses: vmactions/freebsd-vm@c46abacb49f09938ca4e1702d15d836285d694cc # v1
         with:
           release: "14.3"
           usesh: true
+          cpu: 4
           mem: 12288
           # Nothing to bring back; copying the target dir out of the VM fails on large builds.
           copyback: false
           prepare: |
-            pkg install -y curl pkgconf cmake python3 libxkbcommon wayland libX11 libXcursor libXrandr libXi libxcb mesa-libs vulkan-loader gtk3 fontconfig freetype2 alsa-lib
+            pkg install -y git curl pkgconf cmake python3 libxkbcommon wayland libX11 libXcursor libXrandr libXi libxcb mesa-libs vulkan-loader gtk3 fontconfig freetype2 alsa-lib
             curl -fsSL https://sh.rustup.rs | sh -s -- -y --profile minimal
           run: |
             . "$HOME/.cargo/env"