Update pact ruby standalone version to 1.70.0

Author: Neil Campbell

Build/Download-Standalone-Core.ps1

@@ -26,7 +26,7 @@ New-Item -ItemType directory -Path $OutputPath | Out-Null
 
 Import-Module -Name $7ZipSnapIn
 
-$StandaloneCoreVersion = '1.69.0'
+$StandaloneCoreVersion = '1.70.0'
 $StandaloneCoreDownloadBaseUri = "https://github.com/pact-foundation/pact-ruby-standalone/releases/download/v$StandaloneCoreVersion"
 
 # Download and extract the Windows core