* add runtime.txt file to binder folder with Python 3.9
Signed-off-by: Chris Trevino <darthtrevino@gmail.com>
* use python 3.9 in environment.yml
Signed-off-by: Chris Trevino <darthtrevino@gmail.com>
* remove runtime.txt
Signed-off-by: Chris Trevino <darthtrevino@gmail.com>
Signed-off-by: Chris Trevino <darthtrevino@gmail.com>