ci: Add name for cachix/install-nix-action

Author: thunderboltsid

.github/workflows/e2e.yml

@@ -41,7 +41,8 @@ jobs:
 
       # Install nix using cachix/install-nix-action if running on ARC runners
       # See: https://github.com/DeterminateSystems/nix-installer-action/issues/68
-      - uses: cachix/install-nix-action@V27
+      - name: Install Nix on self-hosted ARC runners
+        uses: cachix/install-nix-action@V27
         if: inputs.runs-on == 'self-hosted-ncn-dind'
         with:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}