chore: migrate to codecov

.github/workflows/ci.yml

@@ -87,14 +87,13 @@ jobs:
       - name: Set up dotnet tools and dependencies
         run: just install
 
-      - name: Generate coverage report
+      - name: Run tests
         run: just coverage
 
-      - name: Upload lcov coverage report to Coveralls
-        uses: coverallsapp/github-action@master
+      - name: Coverage
+        uses: codecov/codecov-action@v5
         with:
-          path-to-lcov: coveragereport/lcov.info
-          github-token: ${{ secrets.GITHUB_TOKEN }}
+          token: ${{ secrets.CODECOV_TOKEN }}
 
   Publish_Docs:
     if: github.ref == 'refs/heads/master'

README.md

@@ -1,7 +1,7 @@
 # EasyPost .Net Client Library
 
 [![CI](https://github.com/EasyPost/easypost-csharp/workflows/CI/badge.svg)](https://github.com/EasyPost/easypost-csharp/actions?query=workflow%3ACI)
-[![Coverage Status](https://coveralls.io/repos/github/EasyPost/easypost-csharp/badge.svg?branch=master)](https://coveralls.io/github/EasyPost/easypost-csharp?branch=master)
+[![codecov](https://codecov.io/gh/EasyPost/easypost-csharp/graph/badge.svg?token=y5QUxhFk0o)](https://codecov.io/gh/EasyPost/easypost-csharp)
 [![NuGet version](https://badge.fury.io/nu/EasyPost-Official.svg)](https://badge.fury.io/nu/EasyPost-Official)
 
 EasyPost, the simple shipping solution. You can sign up for an account at <https://easypost.com>.