minor: replace LOCALSTACK_API_KEY with LOCALSTACK_AUTH_TOKEN

Author: whummer

.github/workflows/build_test.yml

@@ -159,7 +159,7 @@ jobs:
 
       - name: Start up LocalStack Snowflake
         env:
-          LOCALSTACK_API_KEY: ${{ secrets.LOCALSTACK_API_KEY }}
+          LOCALSTACK_AUTH_TOKEN: ${{ secrets.LOCALSTACK_AUTH_TOKEN }}
         run: |
           image_name=localstack/snowflake
           # image_name=whummer/snowflake-tmp