Provide GitHub token to action in Compile Examples CI workflow

This is only required because the repository is currently private. This commit can be reverted once the repository is made public.

Author: per1234

Diff for: .github/workflows/compile-examples.yml

@@ -138,3 +138,5 @@ jobs:
             ${{ env.UNIVERSAL_LIBRARIES }}
             ${{ matrix.usb-libraries }}
           sketch-paths: '${{ env.UNIVERSAL_SKETCH_PATHS }} ${{ matrix.usb-sketch-paths }} ${{ matrix.serial1-sketch-paths }} ${{ matrix.starter-kit-sketch-paths }}'
+          # This input can be removed once the repository is made public
+          github-token: ${{ secrets.GITHUB_TOKEN }}