Switch to v3 (#774)

Author: thomasrockhu

README.md

@@ -11,20 +11,20 @@
 **As of February 1, 2022, v1 has been fully sunset and no longer functions**
 
 Due to the [deprecation](https://about.codecov.io/blog/introducing-codecovs-new-uploader/) of the underlying bash uploader,
-the Codecov GitHub Action has released `v2` which will use the new [uploader](https://github.com/codecov/uploader). You can learn
+the Codecov GitHub Action has released `v2`/`v3` which will use the new [uploader](https://github.com/codecov/uploader). You can learn
 more about our deprecation plan and the new uploader on our [blog](https://about.codecov.io/blog/introducing-codecovs-new-uploader/).
 
 We will be restricting any updates to the `v1` Action to security updates and hotfixes.
 
-### Migration from `v1` to `v2`
-The `v2` uploader has a few breaking changes for users
+### Migration from `v1` to `v3`
+The `v3` uploader has a few breaking changes for users
 - Multiple fields have not been transferred from the bash uploader or have been deprecated. Notably
 many of the `functionalities` and `gcov_` arguments have been removed. Please check the documentation
 below for the full list.
 
 ## Usage
 
-To integrate Codecov with your Actions pipeline, specify the name of this repository with a tag number (`@v2` is recommended) as a `step` within your `workflow.yml` file.
+To integrate Codecov with your Actions pipeline, specify the name of this repository with a tag number (`@v3` is recommended) as a `step` within your `workflow.yml` file.
 
 If you have a *private repository*, this Action also requires you to [provide an upload token](https://docs.codecov.io/docs/frequently-asked-questions#section-where-is-the-repository-upload-token-found-) from [codecov.io](https://www.codecov.io) (tip: in order to avoid exposing your token, store it as a `secret`). Optionally, you can choose to include up to four additional inputs to customize the upload context. **For public repositories, no token is needed**
 
@@ -33,7 +33,7 @@ Inside your `.github/workflows/workflow.yml` file:
 ```yaml
 steps:
 - uses: actions/checkout@master
-- uses: codecov/codecov-action@v2
+- uses: codecov/codecov-action@v3
   with:
     token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
     files: ./coverage1.xml,./coverage2.xml # optional
@@ -108,7 +108,7 @@ jobs:
         pip install pytest-cov
         pytest --cov=./ --cov-report=xml
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@v2
+      uses: codecov/codecov-action@v3
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         directory: ./coverage/reports/