ci(fix): forget to checking out CWD before installing that node

For nix to install nodejs from the current working directory, you need to check
out the current working directory first.

Author: Tygo-van-den-Hurk

.github/workflows/many--publish-npm-package.yaml

@@ -137,6 +137,8 @@ jobs:
       PACKAGE_NAME: ${{ needs.build.outputs.package_name }}
       PACKAGE_VERSION: ${{ needs.build.outputs.package_version }}
     steps:
+      - name: Checkout repository
+        uses: actions/[email protected]
       - name: Install Nix using cachix
         uses: cachix/[email protected]
       - name: Set up Node.js using nix