Add .NET 8 and M1 builds

.github/workflows/ci.yml

@@ -1,6 +1,10 @@
 name: CI
 
-on: [push, pull_request]
+on: [push, pull_request, workflow_dispatch]
+
+concurrency:
+  group: environment-${{github.ref}}
+  cancel-in-progress: true
 
 env:
   DOTNET_CLI_TELEMETRY_OPTOUT: 1
@@ -14,16 +18,24 @@ jobs:
       fail-fast: false
       matrix:
         platform:
-          - { name: Linux, os: ubuntu-latest }
+          - { name: Linux, os: ubuntu-22.04 }
           - { name: Windows, os: windows-2022 }
-          - { name: MacOS, os: macos-12 }
+          - { name: MacOS Intel, os: macos-13 }
         dotnet:
           - { name: .NET Core 3.1, version: "3.1" }
           - { name: .NET 6, version: "6.0.x" }
           - { name: .NET 7, version: "7.0.x" }
+          - { name: .NET 8, version: "8.0.x" }
+        include:
+          - platform: { name: MacOS M1, os: macos-14 }
+            dotnet: { name: .NET 6, version: "6.0.x" }
+          - platform: { name: MacOS M1, os: macos-14 }
+            dotnet: { name: .NET 7, version: "7.0.x" }
+          - platform: { name: MacOS M1, os: macos-14 }
+            dotnet: { name: .NET 8, version: "8.0.x" }
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Setup .NET ${{ matrix.dotnet.version }} SDK
         id: setup-dotnet
         uses: actions/setup-dotnet@v3