fix env string (#3385)

Author: lantoli

.github/workflows/test-suite.yml

@@ -77,7 +77,7 @@ jobs:
     with:
       terraform_version: ${{ matrix.terraform_version }}
       provider_version: ${{ matrix.provider_version }}
-      atlas_cloud_env: ${{ inputs.atlas_cloud_env || needs.variables.outputs.is_sun == 'true' && 'qa' }} # Run against QA on Sundays
+      atlas_cloud_env: ${{ inputs.atlas_cloud_env || needs.variables.outputs.is_sun == 'true' && 'qa' || '' }} # Run against QA on Sundays
       ref: ${{ needs.variables.outputs.is_fri == 'true' && 'CLOUDP-320243-dev-2.0.0' || '' }} # Run 2.0.0 dev branch on Fridays
 
   clean-after: