config(.github/install-nix) Add gh token to api rate limits step

Author: MartinNikov

.github/install-nix/action.yml

@@ -33,6 +33,8 @@ runs:
   using: 'composite'
   steps:
     - name: Log GH API rate limits
+      env:
+        GH_TOKEN: ${{ github.token }}
       shell: bash
       run: gh api /rate_limit | jq