chore(ci): remove CI=true from weekly-update workflow (#125)

Author: jdalton

.github/workflows/weekly-update.yml

@@ -69,7 +69,6 @@ jobs:
         timeout-minutes: 30
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
-          CI: 'true'
           GITHUB_ACTIONS: 'true'
         run: |
           if [ -z "$ANTHROPIC_API_KEY" ]; then