Update tox.ini

Author: benieric

tox.ini

@@ -82,7 +82,7 @@ passenv =
 # Can be used to specify which tests to run, e.g.: tox -- -s
 commands =
     python -c "import os; os.system('install-custom-pkgs --install-boto-wheels')"
-    pip install 'apache-airflow==2.10.4' --constraint "https://raw.githubusercontent.com/apache/airflow/constraints-2.10.4/constraints-3.8.txt"
+    pip install 'apache-airflow==2.10.4' --constraint "https://raw.githubusercontent.com/apache/airflow/constraints-2.10.4/constraints-3.9.txt"
     pip install 'torch==2.0.1+cpu' -f 'https://download.pytorch.org/whl/torch_stable.html'
     pip install 'torchvision==0.15.2+cpu' -f 'https://download.pytorch.org/whl/torch_stable.html'
     pip install 'dill>=0.3.8'