[release pipeline] Missing required option for prepare notifications

[mthalman]

Attempting to run the source-build-partners-notifications pipeline results in the following error in the Prepare Notifications step:

Required option 'version-template-path' is missing.

Example pipeline run (internal link)

[mthalman]

Fix available in https://dev.azure.com/dnceng/internal/_git/dotnet-release/pullrequest/51975 (internal link)