Update msbuild_arm64.yaml

Author: irodushka

.github/workflows/msbuild_arm64.yaml

@@ -54,7 +54,7 @@ jobs:
       working-directory: ${{env.GITHUB_WORKSPACE}}
       # Add additional options to the MSBuild command line here (like platform or verbosity level).
       # See https://docs.microsoft.com/visualstudio/msbuild/msbuild-command-line-reference
-      run: msbuild /m /p:Configuration=${{env.BUILD_CONFIGURATION}} /p:Platform=x64 ${{env.SOLUTION_FILE_PATH}}
+      run: msbuild /m /p:Configuration=${{env.BUILD_CONFIGURATION}} /p:Platform=ARM64 ${{env.SOLUTION_FILE_PATH}}
 
     - name: Build InnoSetup installers
       working-directory: ${{env.GITHUB_WORKSPACE}}