Update CI workflow.

.github/workflows/CI.yml

@@ -1,39 +1,58 @@
 name: CI
 on:
-  - push
-  - pull_request
+  push:
+    branches:
+      - main
+    tags: ['*']
+  pull_request:
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ startsWith(github.ref, 'refs/pull/') }}
 jobs:
   test:
     name: Julia ${{ matrix.version }} - ${{ matrix.os }} - ${{ matrix.arch }} - ${{ github.event_name }}
     runs-on: ${{ matrix.os }}
+    continue-on-error: ${{ matrix.experimental }}
     strategy:
       fail-fast: false
       matrix:
         version:
-          - '1.4'
-          - '1.5'
-          - 'nightly'
+          - '1.10'
+          - '^1.11.0-0'
         os:
           - ubuntu-latest
           - macOS-latest
           - windows-latest
         arch:
           - x64
+        experimental: [false]
+        include:
+          - version: 'nightly'
+            os: ubuntu-latest
+            arch: x64
+            experimental: true
+          - version: 'nightly'
+            os: macOS-latest
+            arch: x64
+            experimental: true
+          - version: 'nightly'
+            os: windows-latest
+            arch: x64
+            experimental: true
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - uses: julia-actions/setup-julia@v1
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: actions/cache@v1
-        env:
-          cache-name: cache-artifacts
-        with:
-          path: ~/.julia/artifacts
-          key: ${{ runner.os }}-test-${{ env.cache-name }}-${{ hashFiles('**/Project.toml') }}
-          restore-keys: |
-            ${{ runner.os }}-test-${{ env.cache-name }}-
-            ${{ runner.os }}-test-
-            ${{ runner.os }}-
+      - name: Set environment variables
+        run: echo "JULIA_NUM_THREADS=2" >> $GITHUB_ENV
+      - uses: julia-actions/cache@v1
       - uses: julia-actions/julia-buildpkg@v1
       - uses: julia-actions/julia-runtest@v1
+      - uses: julia-actions/julia-processcoverage@v1
+      - uses: codecov/codecov-action@v3
+        env:
+            CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
+        with:
+            files: lcov.info