Use unique cache keys

.github/workflows/baseline.yml

@@ -31,6 +31,6 @@ jobs:
       - name: Save outputs
         uses: actions/cache/save@v4
         with:
-          key: ${{ runner.os }}-benchmark-baseline
+          key: ${{ runner.os }}-benchmark-baseline-${{ env.GITHUB_SHA }}
           path: |
             libs/langgraph/out/benchmark-baseline.json

.github/workflows/bench.yml

@@ -33,6 +33,8 @@ jobs:
         uses: actions/cache/restore@v4
         with:
           key: ${{ runner.os }}-benchmark-baseline
+          restore-keys: |
+            ${{ runner.os }}-benchmark-baseline-
           fail-on-cache-miss: true
           path: |
             libs/langgraph/out/benchmark-baseline.json