fix: fix actions/cache version`

Author: sagar-a16z

.github/workflows/build.yml

@@ -26,7 +26,7 @@ jobs:
         run: make poetry-download
 
       - name: Set up cache
-        uses: actions/cache@v3.3.2
+        uses: actions/cache@v4
         with:
           path: .venv
           key: venv-${{ matrix.python-version }}-${{ hashFiles('pyproject.toml') }}-${{ hashFiles('poetry.lock') }}