chore(deps): bump actions/cache from 3 to 4 (#9)

.github/workflows/benchmark.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Run benchmark
         run: go test -bench=. ./... | tee output.txt
       - name: Download previous benchmark data
-        uses: actions/cache@v3
+        uses: actions/cache@v4
         with:
           path: ./cache
           key: ${{ runner.os }}-benchmark