Update msbuild_arm64.yaml

Author: irodushka

.github/workflows/msbuild_arm64.yaml

@@ -32,6 +32,8 @@ jobs:
 
     - name: Add MSBuild to PATH
       uses: microsoft/[email protected]
+      with:
+        msbuild-architecture: 'arm64'
 
     - name: Install html-help-workshop, sed, innosetup
       run: |