chore: migrate to codecov (#85)

# Description

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# Testing

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# Pull Request Type

Please select the option(s) that are relevant to this PR.

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] Improvement (fixing a typo, updating readme, renaming a variable
name, etc)

Author: Justintime50

.github/workflows/ci.yml

@@ -67,14 +67,13 @@ 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 }}
 
   NET_Tests:
     # derived from https://dev.to/felipetofoli/github-actions-for-net-full-framework-build-and-test-299h

README.md

@@ -1,7 +1,7 @@
 # EasyVCR
 
 [![CI](https://github.com/EasyPost/easyvcr-csharp/workflows/CI/badge.svg)](https://github.com/EasyPost/easyvcr-csharp/actions?query=workflow%3ACI)
-[![Coverage Status](https://coveralls.io/repos/github/EasyPost/easyvcr-csharp/badge.svg?branch=master)](https://coveralls.io/github/EasyPost/easyvcr-csharp?branch=master)
+[![codecov](https://codecov.io/gh/EasyPost/easyvcr-csharp/graph/badge.svg?token=B79CTGUS8E)](https://codecov.io/gh/EasyPost/easyvcr-csharp)
 [![NuGet](https://img.shields.io/nuget/dt/EasyVCR)](https://www.nuget.org/packages/EasyVCR)
 
 EasyVCR is a library for recording and replaying HTTP interactions in your test suite.