log msys2 location because windows broke

Author: chearon

.github/workflows/prebuild.yaml

@@ -255,6 +255,7 @@ jobs:
 
       - name: Build
         run: |
+          echo "MSYS2 LOCATION: ${{steps.msys2.outputs.msys2-location}}"
           git checkout ${{ matrix.canvas_tag }}
           git checkout $env:GITHUB_SHA -- prebuild/
           npm install -g node-gyp