Release notes 0.81.0 (2023-12-20)

This release introduces the possibility of controlling underlying gosnowflake driver logging by setting the SF_TF_GOSNOWFLAKE_LOG_LEVEL environment variable to the desired level.
A few minor issues were also fixed: #2167, #2276, and #2175.
We have finally bumped go to 1.21.

🎉 What's new:

• identifier validation (#2269) (9687972)

🔧 Misc

• Allow setting gosnowflake logging level from environment variable (#2285) (843e8fc)
• Bump go to 1.21 (#2267) (6b852c2)

🐛 Bug fixes:

• Fix small issues (#2287) (4e2613c)