Update CI workflow.

Author: michakraus

.github/workflows/CI.yml

@@ -19,8 +19,8 @@ jobs:
       matrix:
         version:
           - '1.8'
-          - '1.9'
-          - '^1.10.0-0'
+          - '1.10'
+          - '^1.11.0-0'
         os:
           - ubuntu-latest
           - macOS-latest
@@ -42,7 +42,7 @@ jobs:
             arch: x64
             experimental: true
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.version }}