Run npm install before npm pack

Author: aron

.github/workflows/ci.yml

@@ -54,6 +54,7 @@ jobs:
       # Build a production tarball and run the integration tests against it.
       - run: |
           test "${{ matrix.suite }}" = "cloudflare-worker" && echo "REPLICATE_API_TOKEN=${{ secrets.REPLICATE_API_TOKEN }}" > integration/${{ matrix.suite }}/.dev.vars
+          npm clean-install
           PKG_TARBALL=$(npm --loglevel error pack)
           npm --prefix integration/${{ matrix.suite }} install
           npm --prefix integration/${{ matrix.suite }} install "file:/./$PKG_TARBALL"