chore: update ci

.github/workflows/main.yml

@@ -9,7 +9,11 @@ jobs:
     runs-on: ${{matrix.os}}
     steps:
       - uses: actions/checkout@v2
+        with:
+          submodules: true
       - uses: goto-bus-stop/setup-zig@v1
+        with:
+          version: master
       - name: prepare-linux
         if: runner.os == 'Linux'
         run: |
@@ -21,6 +25,10 @@ jobs:
     runs-on: ubuntu-latest
     steps: 
       - uses: actions/checkout@v2
+        with:
+          submodules: true
       - uses: goto-bus-stop/setup-zig@v1
+        with:
+          version: master
       - run: zig fmt src/**/*.zig