Merge pull request #31 from daku10/dependabot/github_actions/actions/…

…cache-4

Bump actions/cache from 3 to 4

.github/workflows/benchmark.yml

@@ -20,7 +20,7 @@ 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