Add scipy python module

Used to prepare audio ML input

Change-Id: I2b4a3c3cbba860aff1c24e375cfa52c2ba779954

python-requirements.txt

diff --git a/python-requirements.txt b/python-requirements.txt
index 94de1ba..c0e0ae9 100644
--- a/python-requirements.txt
+++ b/python-requirements.txt
@@ -14,6 +14,7 @@
 pyyaml
 requests
 robotframework==4.0.1
+scipy
 sel4-deps
 setuptools
 tempita