Added conditional download block to tests workflow

.github/workflows/run-tests.yml

@@ -51,6 +51,16 @@ jobs:
         with:
           path: ./ophys_testing_data
           key: ophys-datasets-042023-${{ matrix.os }}-${{ steps.ophys.outputs.HASH_OPHYS_DATASET }}
+
+      - if: steps.cache-ophys-datasets.outputs.cache-hit == false
+        name: Install and configure AWS CLI
+        run: |
+          pip install awscli
+          aws configure set aws_access_key_id ${{ secrets.AWS_ACCESS_KEY_ID }}
+          aws configure set aws_secret_access_key ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+      - if: steps.cache-ophys-datasets.outputs.cache-hit == false
+        name: Download data from S3
+        run: aws s3 cp --recursive s3://${{ secrets.S3_GIN_BUCKET }}//ophys_testing_data ./ophys_testing_data
 
       - name: Run full pytest with coverage
         run: pytest -n auto --dist loadscope --cov=./ --cov-report xml:./codecov.xml