* flow testnet v2
* set batch sizes
* add QN node_url to sl testnet model
* upd node_url in testnet rt models
* add gha workflows for testnet
* testnet gold models
* upd tag on gold
* upd tests
* upd tests and set min to 280mm
* upd test - rm null
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Co-authored-by: shah <info@shahnewazkhan.ca>
