ci: bump version to 3.0.6

Author: marcpinet

setup.py

@@ -2,7 +2,7 @@
 
 setup(
     name='neuralnetlib',
-    version='3.0.5',
+    version='3.0.6',
     author='Marc Pinet',
     description='A simple convolutional neural network library with only numpy as dependency',
     long_description=open('README.md', encoding="utf-8").read(),