dataconnect.yml: add sparse checkout

Author: dconeybe

.github/workflows/dataconnect.yml

@@ -211,6 +211,7 @@ jobs:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           show-progress: false
+          sparse-checkout: '.github/'
       - uses: docker://rhysd/actionlint:1.7.7
         with:
           args: -color /github/workspace/.github/workflows/dataconnect.yml
@@ -222,6 +223,11 @@ jobs:
       issues: write
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        with:
+          show-progress: false
+          sparse-checkout: 'firebase-dataconnect/ci.zsh'
+
       - name: Post Comment on Issue
         #if: github.event_name == 'schedule'
         env: