Run npm install as part of npm run all (#75)

package.json

@@ -12,7 +12,7 @@
     "package": "ncc build -o dist/ruff-action src/ruff-action.ts && ncc build -o dist/update-known-checksums src/update-known-checksums.ts",
     "act": "act pull_request -W .github/workflows/test.yml --container-architecture linux/amd64 -s GITHUB_TOKEN=\"$(gh auth token)\"",
     "update-known-checksums": "RUNNER_TEMP=known_checksums node dist/update-known-checksums/index.js src/download/checksum/known-checksums.ts \"$(gh auth token)\"",
-    "all": "npm run build && npm run format && npm run lint && npm run package"
+    "all": "npm install && npm run build && npm run format && npm run lint && npm run package"
   },
   "repository": {
     "type": "git",