upgrade imgui.net to 1.90.5 (#475)

also, update build process deps

Author: zaafar

.github/workflows/build.yml

@@ -10,12 +10,12 @@ jobs:
     runs-on: windows-latest
     steps:
     - name: Checkout Repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         fetch-depth: 0
 
     - name: Install .NET
-      uses: actions/setup-dotnet@v3
+      uses: actions/setup-dotnet@v4
       with:
         dotnet-version: 7.0.x