Bump python minimum supported version to 3.10

[volodymyrZotov]

As of the python v3.9 end of life in October 2025, bumping minimum supported version to v3.10 which has EOL October 2026.

Also users requested a new release in #124 and we've already bumped min python version to 3.9 in #116 , which is considered as breaking change and leads to major version update, I decided to make another min python version upgrade before making a v2 release of the SDK.

Changes:

1. Manually bump python version in pyproject.toml to v3.10
2. Manually update build-systems section to be compliant with PEP-517
3. poetry show --outdated - to show outdated dependencies
4. poetry add --dev pytest@latest pytest-asyncio@latest pytest-cov@latest to update outdated dependencies
5. Run poetry update to update all other outdated dependencies
6. poetry run pytest -q - to run tests
7. Workflows updated to use latest action versions and python v3.10