Upgrade snowflake-connector-python (1.7.2) -> (2.9.0)

Closes https://gitlab.com/gitlab-data/analytics/-/issues/11548

Requirements

• Upgrade snowflake-connector-python (2.9.0) to the latest version: target-snowflake-edcast
• Test all extractions/targets gitlab-data-meltano
  • tap_xactly
  • tap-zengrc
  • tap-adaptive
  • tap-edcast - will be decommissioned under https://gitlab.com/gitlab-data/analytics/-/issues/13199