Allow failure on nightly CI

Author: gdalle

.github/workflows/CI.yml

@@ -14,17 +14,25 @@ jobs:
   test:
     name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
     runs-on: ${{ matrix.os }}
+    continue-on-error: ${{ matrix.allow_failure }}
     strategy:
       fail-fast: false
       matrix:
         version:
           - '1.6'
-          - '1.9'
+          - '1'
           - 'nightly'
         os:
           - ubuntu-latest
         arch:
           - x64
+        include:
+          - version: '1.6'
+            allow_failure: false
+          - version: '1'
+            allow_failure: false
+          - version: 'nightly'
+            allow_failure: true
     steps:
       - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1