Test backend config

Author: jonakoudijs

.github/workflows/plan.yaml

@@ -49,12 +49,12 @@ jobs:
         env:
           TERRAFORM_PRE_RUN: |
             # Install prerequisites
+            apt update
             apt install -y lsb-release
 
             # Install latest Packer
             wget -O - https://apt.releases.hashicorp.com/gpg | gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg
             echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(grep -oP '(?<=UBUNTU_CODENAME=).*' /etc/os-release || lsb_release -cs) main" | tee /etc/apt/sources.list.d/hashicorp.list
-            apt update
             apt install -y packer
   
             # Install latest Talosctl