Downgrade numpy lower pin to 1.21

Author: molinav

CHANGELOG.md

@@ -20,6 +20,8 @@ https://semver.org/spec/v2.0.0.html
 ### Fixed
 - Downgrade upper pin for Cython requirement from 3.1 to 3.0 due to
   build error triggered by `_geoslib.pyx` (solves issue [#581]).
+- Downgrade lower pin for `numpy` to `>= 1.21` for Python >= 3.8, whose
+  upgrade is delayed until `basemap` 1.4.0.
 
 ## [1.3.7] - 2023-05-04
 

packages/basemap/requirements.txt

@@ -8,7 +8,7 @@ numpy >= 1.15, < 1.17; python_version == "3.4"
 numpy >= 1.16, < 1.19; python_version == "3.5"
 numpy >= 1.19, < 1.20; python_version == "3.6"
 numpy >= 1.21, < 1.22; python_version == "3.7"
-numpy >= 1.22, < 1.26; python_version >= "3.8"
+numpy >= 1.21, < 1.26; python_version >= "3.8"
 
 cycler < 0.11; python_version == "3.2"
 pyparsing >= 1.5, < 2.4.1; python_version == "2.6"