Revert "Try removing spm-package-resolved job"

This reverts commit 21816b0.

Author: andrewheard

.github/workflows/common.yml

@@ -85,6 +85,7 @@ jobs:
   spm:
     # Run on the main repo's scheduled jobs or pull requests and manual workflow invocations.
     if: (github.repository == 'firebase/firebase-ios-sdk' && github.event_name == 'schedule') || contains(fromJSON('["pull_request", "workflow_dispatch"]'), github.event_name)
+    needs: [spm-package-resolved]
     strategy:
       matrix:
         os: [macos-15]
@@ -100,6 +101,10 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
     - uses: actions/checkout@v4
+    - uses: actions/cache/restore@v4
+      with:
+        path: .build
+        key: ${{needs.spm-package-resolved.outputs.cache_key}}
     - name: Xcode
       run: sudo xcode-select -s /Applications/${{ matrix.xcode }}.app/Contents/Developer
     - name: Run setup command, if needed.