update exercise dependencies

Author: ChristopherGS

exercise_notebooks/docker_exercise/requirements.txt

@@ -1,2 +1,3 @@
 flask>=1.1.1,<1.2.0
+markupsafe==2.0.1 # https://github.com/aws/aws-sam-cli/issues/3661
 redis>=3.3.11,<3.4

exercise_notebooks/shadow_mode_exercise/requirements.txt

@@ -1,9 +1,10 @@
 # ML requirements
-numpy>=1.18.1,<1.19.0
-scikit-learn>=0.22.1,<0.23.0
-pandas>=0.25.3,<0.26.0
+numpy>=1.20.0,<1.21.0
+pandas>=1.3.5,<1.4.0
+scikit-learn>=1.0.2,<1.1.0
+jupyter>=1.0.0,<1.1.0
 feature_engine>=0.3.1,<0.4.0
-joblib>=0.14.1,<0.15.0
+joblib>=1.0.1,<1.1.0
 matplotlib>=3.1.3,<3.2.0
 seaborn>=0.10.0,<0.11.0
 jupyter>=1.0.0,<1.1.0