Avoid matplotlib version

AntSimi · web-flow · commit 610af46b5a7c · 2021-09-26T18:14:15.000+02:00
diff --git a/requirements.txt b/requirements.txt
@@ -1,4 +1,5 @@
-matplotlib
+# Due to : 'PathCollection' object has no attribute 'get_color' with 3.5 version
+matplotlib < 3.5
 netCDF4
 numba>=0.53
 numpy<1.21
