Run all matrix builds to completion

When working with platform specific code (such as adding Kotlin tests
to the CI), it is very convenient to let the matrix builds run to
completion so you can get a full overview of the platforms where
things work and where they fail.

.github/workflows/native_build.yml

@@ -8,6 +8,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
+      fail-fast: false
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3