make CI fail fast

Author: jw3126

.github/workflows/CI.yml

@@ -10,7 +10,7 @@ jobs:
     name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }}
     runs-on: ${{ matrix.os }}
     strategy:
-      fail-fast: false
+      fail-fast: true
       matrix:
         version:
           - '1.0'