Use authenticated GH API requests in "Compile Examples" CI workflow (#73)

The arduino/compile-sketches GitHub Actions action needs to do a GitHub API request to determine the base branch of a PR for the deltas determination. If a token is not defined via the action's `github-token` input, it does an unauthenticated API request, which is subject to more strict rate limiting policy. Although its unlikely for the number of API requests to exceed the unauthenticated allowance, use of a token ensures it will never happen. GitHub Actions provides a token for this purpose, so there is no need to set up a custom one.

Author: aentinger

.github/workflows/compile-examples.yml

@@ -26,6 +26,7 @@ jobs:
       - name: Compile examples
         uses: arduino/compile-sketches@main
         with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
           fqbn: arduino:samd:mkrnb1500
           libraries: |
             # Install the WiFi101 library from the local path