GEODE-7225: Change download URL from 'c' to 'd', to reflect update on OpenSSL site (#523)

diff --git a/packer/windows/install-openssl.ps1 b/packer/windows/install-openssl.ps1
index 9fcabf7..f20f510 100644
--- a/packer/windows/install-openssl.ps1
+++ b/packer/windows/install-openssl.ps1
@@ -16,4 +16,4 @@
 $ErrorActionPreference = "Stop"
 Import-Module Packer -Force
 
-Install-Package https://slproweb.com/download/Win64OpenSSL-1_1_1c.exe -ArgumentList /silent
+Install-Package https://slproweb.com/download/Win64OpenSSL-1_1_1d.exe -ArgumentList /silent