chore(deps): pin pnpm/action-setup action to a7487c7 (#107)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/node-ci.yml

@@ -26,7 +26,7 @@ jobs:
           node-version: ${{ matrix.node-version }}
 
       - name: Setup pnpm
-        uses: pnpm/action-setup@v4
+        uses: pnpm/action-setup@a7487c7e89a18df4991f7f222e4898a00d66ddda # v4
         with:
           version: latest