fix(ci): helm installation process

Closes #6259

Author: squakez

.github/workflows/install.yml

@@ -74,9 +74,9 @@ jobs:
     - name: Install Helm
       shell: bash
       run: |
-        curl https://baltocdn.com/helm/signing.asc | gpg --dearmor | sudo tee /usr/share/keyrings/helm.gpg > /dev/null
-        sudo apt-get install apt-transport-https --yes
-        echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/helm.gpg] https://baltocdn.com/helm/stable/debian/ all main" | sudo tee /etc/apt/sources.list.d/helm-stable-debian.list
+        sudo apt-get install curl gpg apt-transport-https --yes
+        curl -fsSL https://packages.buildkite.com/helm-linux/helm-debian/gpgkey | gpg --dearmor | sudo tee /usr/share/keyrings/helm.gpg > /dev/null
+        echo "deb [signed-by=/usr/share/keyrings/helm.gpg] https://packages.buildkite.com/helm-linux/helm-debian/any/ any main" | sudo tee /etc/apt/sources.list.d/helm-stable-debian.list
         sudo apt-get update
         sudo apt-get install helm