Merge pull request #109 from yusharon/pin-jinja2-version

pin jinja2,MarkupSafe,Werkzeug version

Author: yusharon

requirements.txt

@@ -1,6 +1,6 @@
 boto3==1.16.4
 botocore==1.19.4
-cryptography==3.4.6
+cryptography==35.0.0
 Flask==1.1.1
 itsdangerous==2.0.1
 gunicorn==20.0.4
@@ -18,3 +18,6 @@ sagemaker-training==4.0.1
 scikit-learn==0.23.2
 scipy==1.5.3
 six==1.15.0
+jinja2==3.0.3
+MarkupSafe==2.1.1
+Werkzeug==0.15.6