Update the nightly installation

Author: pepone

.github/actions/install-nightly-ice/action.yml

@@ -13,9 +13,9 @@ runs:
       if: runner.os == 'Linux'
       shell: bash
       run: |
-        sudo mkdir -p /etc/apt/keyrings
-        sudo curl -fsSL https://download.zeroc.com/GPG-KEY-zeroc-nightly | sudo gpg --dearmor -o /etc/apt/keyrings/zeroc-nightly.gpg
-        echo "deb [signed-by=/etc/apt/keyrings/zeroc-nightly.gpg] https://download.zeroc.com/nexus/repository/ubuntu24.04-nightly nightly main" | sudo tee /etc/apt/sources.list.d/zeroc-nightly.list
+        wget https://download.zeroc.com/ice/nightly/ubuntu24.04/ice-repo-nightly_1.0_all.deb -O ice-repo-nightly.deb
+        sudo dpkg -i ice-repo-nightly.deb
+        rm ice-repo-nightly.deb
 
         sudo apt-get update
         sudo apt-get install -y libzeroc-ice-dev