Update CI build workflow and clear NuGet cache

Updated checkout action version and added NuGet cache clearing step.

Author: dahall

.github/workflows/cibuild.yml

@@ -32,11 +32,14 @@ jobs:
     runs-on: windows-latest
 
     steps:
-    - uses: actions/checkout@v6.0.0
+    - uses: actions/checkout@v4
 
     - name: Add MSBuild to PATH
       uses: microsoft/[email protected]
 
+    - name: Clear NuGet cache
+      run: nuget locals all -clear
+
     - name: Restore VssApi NuGet packages
       working-directory: ${{env.GITHUB_WORKSPACE}}
       run: msbuild ${{env.SOLUTION_PATH}}\PInvoke\VssApi\Vanara.PInvoke.VssApi.vcxproj /m /verbosity:quiet /t:restore /p:RunAnalyzersDuringBuild=false /p:Configuration=${{env.BUILD_CONFIGURATION}}