Merge pull request #32 from simdutf/extend_tests

chore: allow ci on many OSes

Author: lemire

.github/workflows/dotnet.yml

@@ -1,10 +1,15 @@
 name: .NET
 
-on: [push]
+on: [push, pull_request]
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    name: Build and test on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, windows-latest, macos-latest]
     steps:
     - uses: actions/checkout@v4