Switch from coveralls to codecov (#84)

* Switch from coveralls to codecov

* Update README.md

Author: jan-janssen

.github/workflows/pipeline.yml

@@ -122,8 +122,10 @@ jobs:
         coverage run
         coverage report
         coverage xml
-    - name: Coveralls
-      uses: coverallsapp/github-action@v2
+    - name: Upload coverage reports to Codecov
+      uses: codecov/codecov-action@v5
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }}
 
   notebooks:
     needs: [black]

README.md

@@ -1,6 +1,6 @@
 # pyauthenticator
 [![Pipeline](https://github.com/jan-janssen/pyauthenticator/actions/workflows/pipeline.yml/badge.svg)](https://github.com/jan-janssen/pyauthenticator/actions/workflows/pipeline.yml)
-[![Coverage Status](https://coveralls.io/repos/github/jan-janssen/pyauthenticator/badge.svg?branch=main)](https://coveralls.io/github/jan-janssen/pyauthenticator?branch=main)
+[![codecov](https://codecov.io/github/jan-janssen/pyauthenticator/graph/badge.svg?token=K0VG71K9YI)](https://codecov.io/github/jan-janssen/pyauthenticator)
 [![Code style: black](https://img.shields.io/badge/code%20style-black-000000.svg)](https://github.com/psf/black)
 
 Similar to the Google authenticator just written in Python. With more and more services requiring two factor