Skip renaming OpenSSL DLLs

to fix CI failures like:
https://github.com/ruby/ruby/actions/runs/6190995187/job/16808382442

.github/workflows/windows.yml

@@ -147,9 +147,14 @@ jobs:
           for %%I in (C:\vcpkg\installed\x64-windows\bin\*.dll) do (
             if not %%~nI == readline mklink %%~nxI %%I
           )
+      # We use OpenSSL instealled by vcpkg instead
+      - name: disable system OpenSSL
+        run: |
           for %%I in (libcrypto-1_1-x64 libssl-1_1-x64) do (
             ren c:\Windows\System32\%%I.dll %%I.dll_
           )
+        # windows-2019 image doesn't have OpenSSL as of 2023/9/14
+        if: ${{ matrix.vs != 2019 }}
 
       - name: Configure
         run: >-