Set fail-fast to false in CI workflow.

Avoid other jobs from being cancelled when one job fails.

Author: ztangent

.github/workflows/ContinuousIntegration.yml

@@ -13,6 +13,7 @@ jobs:
   ContinuousIntegration:
     runs-on: ${{ matrix.os }}
     strategy:
+      fail-fast: false
       matrix:
         julia-version: ['1', '1.3', '1.6', 'nightly']
         julia-arch: [x64]