CI: correct automatic mach-examples updates

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

.github/workflows/update_examples.yml

@@ -12,19 +12,18 @@ jobs:
     if: ${{ github.event.workflow_run.conclusion == 'success' }}
     runs-on: ubuntu-latest
     steps:
-      - name: Checkout
-        uses: actions/checkout@v2
       - name: Checkout hexops/mach-examples repo
         uses: actions/checkout@v2
         with:
           repository: hexops/mach-examples
-          token: ${{ secrets.HEXOPS_MACH_GPU_DAWN_PUSH }}
+          token: ${{ secrets.HEXOPS_MACH_PUSH_SUBREPOS }}
+          submodules: 'true'
       - name: 'mach-examples: update mach submodule'
         run: |
           cd libs/mach
           git pull
           cd ../../
-      - name: 'gpu/dawn: use latest binary release'
+      - name: 'mach-examples: push submodule update'
         run: |
           git config user.name 'Release automation'
           git config user.email 'stephen@hexops.com'