Rollback MSVC version

Author: Vasil Pashov

.github/workflows/build_steps.yml

@@ -88,6 +88,12 @@ jobs:
           disk-root: "D:"  # This is also the checkout directory. Total size 12GB.
         continue-on-error: true
 
+        # Needed because the compiler in 17.12.0 (MSVC 19.42.34433.0) fails to compile folly. Issue raised https://github.com/microsoft/vcpkg/issues/42233
+      - name: Add msbuild to PATH
+        uses: microsoft/setup-msbuild@v2
+        with:
+          vs-version: '17.11.6'
+
       - name: Enable Windows compiler commands
         if: matrix.os == 'windows'
         uses: ilammy/[email protected]