chore: bump SDK version to 17.2.0

[TorstenDittmann]

This PR bumps the SDK package version to 17.2.0 after the concurrent chunk upload update.

[greptile-apps]

Greptile Summary

This PR bumps the Appwrite Apple SDK version reference from 17.1.1 to 17.2.0 following the concurrent chunk upload update.

• README.md: SPM installation snippet updated to from: \"17.2.0\".
• docs/examples/avatars/get-screenshot.md: Timezone parameter changed from .americaNewYork to .africaAbidjan; the latitude/longitude values still correspond to San Francisco, so the example values are inconsistent.

Confidence Score: 5/5

Safe to merge — the change is a straightforward version string update with no logic changes.

Both changed files are documentation/example content only. The version bump in README.md is correct and intentional. The only concern is a cosmetic inconsistency in the getScreenshot example (mismatched timezone and coordinates), which is a pre-existing issue flagged separately and does not affect runtime behavior.

No files require special attention.

Important Files Changed

Filename	Overview
README.md	Version reference bumped from 17.1.1 to 17.2.0 in the Swift Package Manager installation example.
docs/examples/avatars/get-screenshot.md	Timezone parameter in the example changed from .americaNewYork to .africaAbidjan; the latitude/longitude coordinates still point to San Francisco, creating a mismatch in the example.

_{Reviews (2): Last reviewed commit: "chore: bump SDK version to 17.2.0" | Re-trigger Greptile}

[TorstenDittmann]

Closing this follow-up because this generated diff does not contain a package/version metadata bump; Apple SDK versioning is tag-based here.