ci: change unmaintained action

Author: vrischmann

.github/workflows/main.yml

@@ -20,9 +20,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
-      - uses: goto-bus-stop/setup-zig@v2
-        with:
-          version: master
+      - uses: mlugg/setup-zig@v1
       - run: zig fmt --check *.zig
 
   test-in-memory:
@@ -36,9 +34,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup zig
-        uses: goto-bus-stop/setup-zig@v2
-        with:
-          version: master
+        uses: mlugg/setup-zig@v1
 
       - name: Install qemu
         if: ${{ matrix.os == 'ubuntu-24.04' }}