ci: enable DEVBOX_DEBUG for all test jobs (#751)

Author: gcurtis

.github/workflows/cli-tests.yaml

@@ -30,6 +30,7 @@ env:
   HOMEBREW_NO_EMOJI: 1
   HOMEBREW_NO_ENV_HINTS: 1
   HOMEBREW_NO_INSTALL_CLEANUP: 1
+  DEVBOX_DEBUG: 1
 
 jobs:
   typos:
@@ -128,11 +129,10 @@ jobs:
       - name: Install nix and devbox packages
         run: |
           export NIX_INSTALLER_NO_CHANNEL_ADD=1
-          export DEVBOX_DEBUG=1
-          
+
           # Setup github authentication to ensure Github's rate limits are not hit.
           # If this works, we can consider refactoring this into a reusable github action helper.
           mkdir -p ~/.config/nix
           echo "access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}" > ~/.config/nix/nix.conf
-          
+
           devbox run echo "Installing packages..."