Update mr_ci_text_spotting.yml

Author: rwood-97

.github/workflows/mr_ci_text_spotting.yml

@@ -16,6 +16,7 @@ jobs:
     env:
       # point datasets to ~/.torch so it's cached by CI
       DETECTRON2_DATASETS: ~/.torch/datasets
+      PYTHONIOENCODING: utf-8
 
     runs-on: ${{ matrix.os }}
     steps: