Log Message:
net/ruby-train-core: update to 3.12.3

3.12.1 (2024-04-15)

* Add missing require for OpenStruct library #775 (Vasu1105)

3.12.2 (2024-04-15)

* Turn off vendor cache #774 (Vasu1105)

3.12.3 (2024-04-16)

Merged Pull Requests

* gem: pin down googleauth gem to below 1.9 #773 (ahasunos)