Rename master -> main

.github/workflows/ci.yml

@@ -2,7 +2,7 @@ name: Python CI
 on:
   push:
     branches:
-      - master
+      - main
       - develop
   pull_request:
   release:

README.md

@@ -1,9 +1,10 @@
 [![PyPI version](https://badge.fury.io/py/safe-cli.svg)](https://badge.fury.io/py/safe-cli)
 [![Build Status](https://github.com/safe-global/safe-cli/actions/workflows/ci.yml/badge.svg)](https://github.com/safe-global/safe-cli/actions/workflows/ci.yml)
-[![Coverage Status](https://coveralls.io/repos/github/safe-global/safe-cli/badge.svg?branch=master)](https://coveralls.io/github/safe-global/safe-cli?branch=master)
+[![Coverage Status](https://coveralls.io/repos/github/safe-global/safe-cli/badge.svg?branch=main)](https://coveralls.io/github/safe-global/safe-cli?branch=main)
 ![Python 3.9](https://img.shields.io/badge/Python-3.9-blue.svg)
 ![Python 3.10](https://img.shields.io/badge/Python-3.10-blue.svg)
 ![Python 3.11](https://img.shields.io/badge/Python-3.11-blue.svg)
+![Python 3.12](https://img.shields.io/badge/Python-3.12-blue.svg)
 [![Docker Image Version (latest semver)](https://img.shields.io/docker/v/safeglobal/safe-cli?label=Docker&sort=semver)](https://hub.docker.com/r/safeglobal/safe-cli)
 
 # Safe-CLI