Source
Migrating project definition files from version 1.x to 2.0
To convert a version 1.x project definition file to the version 2 format, do the following: Go to your project directory that contains the version 1.x snowflake.yml file. Enter the snow helpers v1 - to - v2 command.
snow helpers v1-to-v2
Migrates the Snowpark, Streamlit, and Native App project definition files from V1 to V2.