Don't fail-fast on tests

This at least allows testing all platforms regardless of platform-specific failures.

Author: ChrisDenton

.github/workflows/main.yml

@@ -13,6 +13,7 @@ jobs:
     name: Test
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
         include:
           - os: ubuntu-20.04