Update sc.ip.requirements.txt

Author: dciborow

.depends/sc.ip.requirements.txt

@@ -2,7 +2,7 @@ cvxopt>=1.2.6
 cvxpy>=1.1.10
 holidays>=0.10.3
 matplotlib>=2.2.5
-numpy==1.21.1
+numpy==1.19.2
 pandas==1.1.3
 pyarrow>=1.0.1
 requests>=2.24.0