project: upgrade to .NET 9 (#694)

Signed-off-by: leo <longshuang@msn.cn>

.github/workflows/build.yml

@@ -32,7 +32,7 @@ jobs:
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: 8.0.x
+          dotnet-version: 9.0.x
       - name: Configure arm64 packages
         if: ${{ matrix.runtime == 'linux-arm64' }}
         run: |

global.json

@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "8.0.0",
+    "version": "9.0.0",
     "rollForward": "latestMajor",
     "allowPrerelease": false
   }

src/SourceGit.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
     <OutputType>WinExe</OutputType>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net9.0</TargetFramework>
     <BuiltInComInteropSupport>true</BuiltInComInteropSupport>
     <ApplicationManifest>App.manifest</ApplicationManifest>
     <ApplicationIcon>App.ico</ApplicationIcon>