[release] Bumped to release 9.10.0

[Aryamanz29]

Release 9.10.0 — bumps pyatlan/version.txt and adds the HISTORY.md entry.

Covers everything merged to main since 9.9.0:

Bug Fixes

• Clearer error when adding a tag that doesn't exist — adding an Atlan tag by a name that isn't in your workspace now fails right away with a clear message that names the tag, instead of a confusing server error that made it look like the tag had been deleted. Reading and re-saving assets that already carry a deleted tag continues to work as before.
• Much faster imports — importing asset models (e.g. from pyatlan.model.assets import Column) is now about 3× faster (a cold import drops from ~8s to under 3s), with the biggest improvement on Windows where imports could previously stall. Everything else behaves the same.

Packages

• cryptography upgraded to pick up an important security fix. Requires Python 3.9.1 or newer.

No code changes beyond version.txt + HISTORY.md.

🤖 Generated with Claude Code