FreeBSD CI: install git in the VM (xtask's asset test lists tracked files)

Co-Authored-By: Claude Opus 5.5 <[email protected]>

.github/workflows/freebsd.yml

@@ -36,7 +36,7 @@ jobs:
           # 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"