Upgrade to .NET 9

Author: SteveDesmond-ca

.github/workflows/CI.yml

@@ -11,7 +11,7 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
 
     - name: Restore
       run: dotnet restore

.github/workflows/CodeQL.yml

@@ -53,7 +53,7 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
 
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)

.github/workflows/Sonar.yml

@@ -15,7 +15,7 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
 
     - name: Install Java
       uses: actions/setup-java@v4

.github/workflows/nuget.yml

@@ -14,7 +14,7 @@ jobs:
 
     - uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: 8.0.x
+        dotnet-version: 9.0.x
 
     - name: Run tests
       run: dotnet test

README.md

@@ -12,7 +12,7 @@ Synchronize GitHub issue labels across repositories
 
 ## Requirements
 
-- .NET 8 SDK
+- .NET SDK
 
 ## Installation
 

src/GitHubLabelSync.csproj

@@ -4,7 +4,7 @@
 		<OutputType>Exe</OutputType>
 		<PackAsTool>true</PackAsTool>
 		<ToolCommandName>sync-labels</ToolCommandName>
-		<TargetFramework>net8.0</TargetFramework>
+		<TargetFramework>net9.0</TargetFramework>
 		<Description>Synchronize GitHub issue labels across repositories</Description>
 		<Authors>ecoAPM LLC</Authors>
 		<Company>ecoAPM LLC</Company>

test/GitHubLabelSync.Tests.csproj

@@ -1,11 +1,11 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
-		<TargetFramework>net8.0</TargetFramework>
+		<TargetFramework>net9.0</TargetFramework>
 		<ImplicitUsings>enable</ImplicitUsings>
 		<Nullable>enable</Nullable>
 	</PropertyGroup>
 	<ItemGroup>
-		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1"/>
+		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0"/>
 		<PackageReference Include="NSubstitute" Version="5.3.0"/>
 		<PackageReference Include="xunit" Version="2.9.2"/>
 		<PackageReference Include="xunit.runner.visualstudio" Version="2.8.2"/>