update galaxy badge

Add new working dynamic badge for galaxy version

Author: cmeissner

README.md

@@ -1,6 +1,6 @@
 # phpIPAM Ansible Modules
 
-[![Version on Galaxy](https://img.shields.io/badge/galaxy-1.7.0-blue)](https://galaxy.ansible.com/ui/repo/published/codeaffen/phpipam/)
+[![Dynamic JSON Badge](https://img.shields.io/badge/dynamic/json?url=https%3A%2F%2Fgalaxy.ansible.com%2Fapi%2Fv3%2Fplugin%2Fansible%2Fcontent%2Fpublished%2Fcollections%2Findex%2Fcodeaffen%2Fphpipam%2F&query=%24.highest_version.version&label=galaxy)](https://galaxy.ansible.com/ui/repo/published/codeaffen/phpipam/)
 [![Codacy Badge](https://app.codacy.com/project/badge/Grade/0372c2bb95e845ce96fa5d4cf13ca1ca)](https://www.codacy.com/gh/codeaffen/phpipam-ansible-modules/dashboard?utm_source=github.com&utm_medium=referral&utm_content=codeaffen/phpipam-ansible-modules&utm_campaign=Badge_Grade)
 [![Documentation Status](https://readthedocs.org/projects/phpipam-ansible-modules/badge/?version=develop)](https://phpipam-ansible-modules.readthedocs.io/en/develop/?badge=develop)