[release] Bumped to release 9.10.2

[Aryamanz29]

Release 9.10.2 — bumps pyatlan/version.txt and prepends the changelog to HISTORY.md.

Covers the three PRs merged since 9.10.1:

New Features

• New INFORMATICA_POWERCENTER connector type (PARTCON-28: Add INFORMATICA_POWERCENTER connector type #979, PARTCON-28)

Packages

• Dependencies refreshed while keeping Python 3.9 support via python_version marker splits — httpx-retries, authlib, tenacity, networkx + dev tooling (pytest 9, mypy 2.3, vcrpy 8, deepdiff 9, …). Verified across py3.9 + py3.13. (chore(deps): bump dependencies, keep py3.9 via version-marker splits (BLDX-1571) #982, BLDX-1571)
• msgspec cap lifted on Python 3.10+ to avoid a py3.13 concurrent-decode segfault; py3.9 stays on ~=0.20.0. (fix(deps): lift msgspec cap to 0.21.1 on py3.10+ for py3.13 concurrent-decode segfault (CNCT-85) #977, CNCT-85)

No breaking changes. No pyatlan/pyatlan_v9 API changes.

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