add forge install

Author: sentilesdal

.github/workflows/benchmark.yml

@@ -30,6 +30,8 @@ jobs:
         uses: foundry-rs/foundry-toolchain@v1
         with:
           version: nightly
+      - name: Install Dependencies
+        run: forge install
       - uses: actions/setup-python@v4
         with:
           python-version: "3.10"