Add .NET 9 requirement for build.

Author: wasabii

.github/workflows/dotnet-release.yml

@@ -16,6 +16,11 @@ jobs:
         with:
           dotnet-version: 8.x
 
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: 9.x
+
       - name: Semantic Release
         uses: cycjimmy/semantic-release-action@v4
         with:

.github/workflows/dotnet-test.yml

@@ -1,5 +1,8 @@
 name: .NET Testing
 
+on:
+  workflow_dispatch:
+
 on:
   pull_request:
     branches:
@@ -21,6 +24,11 @@ jobs:
         with:
           dotnet-version: 8.x
 
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: 9.x
+
       - name: Linting
         run: dotnet format --verify-no-changes