fix type in env var name

Author: jordanstephens

.github/workflows/deploy-changed-samples.yml

@@ -81,7 +81,7 @@ jobs:
           TEST_MB_DB_PASS: ${{ secrets.TEST_MB_DB_PASS }}
           TEST_MB_DB_PORT: ${{ secrets.TEST_MB_DB_PORT }}
           TEST_MB_DB_USER: ${{ secrets.TEST_MB_DB_USER }}
-          TEST_MONGO_INITDB_ROOT_USER: ${{ secrets.TEST_MONGO_INITDB_ROOT_USER }}
+          TEST_MONGO_INITDB_ROOT_USERNAME: ${{ secrets.TEST_MONGO_INITDB_ROOT_USERNAME }}
           TEST_MONGO_INITDB_ROOT_PASSWORD: ${{ secrets.TEST_MONGO_INITDB_ROOT_PASSWORD }}
           TEST_NC_DB: ${{ secrets.TEST_NC_DB }}
           TEST_NC_S3_ENDPOINT: ${{ secrets.TEST_NC_S3_ENDPOINT }}