Checkout git submodules during github CI runs.

Change-Id: Ie4e2d618ee70035004ddcaa40a31725a6a610091

.github/workflows/android.yml

diff --git a/.github/workflows/android.yml b/.github/workflows/android.yml
index ee5e966..b2ad9ea 100644
--- a/.github/workflows/android.yml
+++ b/.github/workflows/android.yml
@@ -32,15 +32,18 @@
           - '28'
 
     steps:
-      - uses: actions/checkout@v4
-
       - name: Setup Dependencies
         run: |
           sudo apt-get update
           sudo apt-get install -y \
+            git \
             ccache \
             ninja-build
 
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
       # Ensure the declared NDK version is always installed even if it's removed
       # from the virtual environment.
       - name: Setup NDK

.github/workflows/linux.yml

diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 8cd9d8e..86b9a70 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -30,12 +30,11 @@
           - no-cuda
 
     steps:
-      - uses: actions/checkout@v4
-
       - name: Setup Dependencies
         run: |
           apt-get update
           apt-get install -y \
+            git \
             build-essential \
             ccache \
             cmake \
@@ -50,6 +49,10 @@
             ninja-build \
             wget
 
+      - uses: actions/checkout@v4
+        with:
+          submodules: recursive
+
       # nvidia cuda toolkit + gcc combo shipped with 22.04LTS is broken
       # and is not able to compile code that uses thrust
       # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1006962

.github/workflows/macos.yml

diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index 89c3534..a85ed8c 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -30,6 +30,8 @@
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          submodules: recursive
 
       - name: Setup Dependencies (iOS)
         if: matrix.target == 'ios'

.github/workflows/windows.yml

diff --git a/.github/workflows/windows.yml b/.github/workflows/windows.yml
index 1e97831..eaffa79 100644
--- a/.github/workflows/windows.yml
+++ b/.github/workflows/windows.yml
@@ -23,6 +23,8 @@
 
     steps:
     - uses: actions/checkout@v4
+      with:
+        submodules: recursive
 
     - name: Setup Dependencies
       uses: msys2/setup-msys2@v2
@@ -117,6 +119,8 @@
 
     steps:
       - uses: actions/checkout@v4
+        with:
+          submodules: recursive
 
       - name: Download and install CUDA toolkit
         if: matrix.gpu == 'cuda'