Update build_windows.yaml

Author: cielavenir

.github/workflows/build_windows.yaml

@@ -16,7 +16,7 @@ jobs:
     - uses: microsoft/setup-msbuild@v1.1
     - name: Set up Boost
       run: |
-        choco install boost-msvc-14.3 -f -y
+        choco install boost-msvc-14.3 -f -y --version 1.85.0
     - name: Set up curl
       run: |
         curl -O -L https://curl.se/windows/dl-8.5.0_1/curl-8.5.0_1-win64-mingw.zip