stopped failing fast, and added Mac intel os

Author: ChrisBarker-NOAA

.github/workflows/pixi_test.yml

@@ -9,10 +9,11 @@ on:
 jobs:
   test:
     strategy:
+      fail-fast: false
       # Test against multiple environments (e.g., different Python versions)
       matrix:
         environment: [test312, test313, test314]
-        os: [ubuntu-latest, windows-latest, macos-latest]
+        os: [ubuntu-latest, windows-latest, macos-latest, macos-15-intel]
     runs-on: ${{ matrix.os }}
 
     steps: