Try to fix OpenSSL linking under Windows CI

It doesn't seem to be pre-installed any more.
Try installing binaries with choco instead of building it from scratch.

Author: mqudsi

.github/workflows/rust.yml

@@ -18,7 +18,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v3
-    - name: Set OPENSSL_DIR for Windows
+    - name: Install OpenSSL
+      if: startsWith(matrix.os, 'windows')
+      run: choco install openssl -y --no-progress
+    - name: Configure OpenSSL link path
       if: startsWith(matrix.os, 'windows')
       run: echo "OPENSSL_DIR=C:\Program Files\OpenSSL" >> $env:GITHUB_ENV
     - name: Build