chore: update SDK versions in languageData.ts

[ably-sync-bot]

Updates SDK versions in languageData.ts to match the latest stable GitHub tags.

Mismatches fixed

SDK	Repo	Docs (old)	Docs (new)	Affected entries
ably-java	v1.7.1	1.6	1.7	pubsub.java, pubsub.kotlin, platform.java, platform.kotlin, aiTransport.java, liveObjects.java
ably-go	v1.4.0	1.3	1.4	pubsub.go, platform.go

No changes needed

• ably-js (2.21) ✅
• ably-cocoa (1.2) ✅
• ably-python (3.1) ✅
• ably-ruby (1.2) ✅
• ably-dotnet (1.2) ✅
• ably-flutter (1.2) ✅
• ably-php (1.1) ✅
• ably-chat-js (1.3) ✅
• ably-chat-kotlin (1.2) ✅
• ably-chat-swift (1.2) ✅
• spaces (0.5) ✅
• laravel-broadcaster (1.0) ✅
• ably-liveobjects-swift-plugin (0.4) ✅
• liveSync.javascript — skipped (excluded per policy)

Generated by the sdk-version-checker skill.

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Submitted by: Andy Ford (andy.ford@ably.com)
Submitted at: 2026-04-20T12:41:13.560Z
Created via githubCreatePRWithFile MCP tool

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