Update package requirements (#42)

* Updated numpy version

* Version bump

* Updated deprecated action

* Update __init__.py

---------

Co-authored-by: Alasdair Gray <[email protected]>

Author: marcomangano

niceplots/__init__.py

@@ -1,7 +1,7 @@
 import os
 from matplotlib import font_manager
 
-__version__ = "2.5.1"
+__version__ = "2.6.0"
 
 
 def addFonts():

setup.py

@@ -24,7 +24,7 @@
     license="Apache License, Version 2.0",
     packages=["niceplots", "niceplots.styles", "niceplots.fonts"],
     install_requires=[
-        "numpy>=1.16",
+        "numpy>=1.21",
         "matplotlib>=2.2",
         "scipy>=1.7",
     ],