gpu-dawn: CI: always upgrade Zig M1 CI version

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>

gpu-dawn/.github/workflows/m1_ci.yml

@@ -20,7 +20,8 @@ jobs:
         uses: actions/checkout@v2
       - name: Setup Zig
         run: |
-          zig version
+          sudo rm -rf /usr/local/bin/zig /usr/local/bin/lib/
+          sudo sh -c 'wget -c https://ziglang.org/builds/zig-linux-aarch64-0.10.0-dev.2431+0e6285c8f.tar.xz -O - | tar -xJ --strip-components=1 -C /usr/local/bin'
       - name: Clone mach-glfw
         run: rm libs/mach-glfw && git clone https://github.com/hexops/mach-glfw libs/mach-glfw
       - name: install (debug)