CI: recursively clone submodules

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

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
         with:
-          submodules: 'true'
+          submodules: 'recursive'
       - name: Setup Zig
         run: |
           sudo apt install xz-utils
@@ -55,7 +55,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
         with:
-          submodules: 'true'
+          submodules: 'recursive'
       - name: Setup Zig
         run: |
           $ProgressPreference = 'SilentlyContinue'
@@ -74,7 +74,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
         with:
-          submodules: 'true'
+          submodules: 'recursive'
       - name: Setup Zig
         run: |
           brew uninstall --ignore-dependencies libx11 # https://github.com/ziglang/zig/issues/11066

.github/workflows/m1_ci.yml

@@ -27,7 +27,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
         with:
-          submodules: 'true'
+          submodules: 'recursive'
       - name: test
         run: zig build test
       - name: build