Bump redis-authx dependencies to version 0.2.0

[atakavci]

Note

Medium Risk
Pins authentication libraries used for Entra ID integration; behavior may change with the beta-to-0.2.0 upgrade even though this PR does not modify client code.

Overview
Updates redis-authx artifacts from 0.1.1-beta2 (and the doc example from 0.1.1-beta1) to 0.2.0.

In pom.xml, both redis-authx-core (compile) and redis-authx-entraid (test) are pinned to 0.2.0. The Microsoft Entra ID setup guide in connecting-redis.md is updated so the sample Maven dependency matches that version.

There are no Lettuce source or test code changes in this PR—only dependency coordinates and documentation.

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[chatgpt-codex-connector]

Update the documented AuthX dependency version

The published Entra ID setup in docs/user-guide/connecting-redis.md still instructs consumers to add redis-authx-entraid:0.1.1-beta1. Because this dependency remains test-scoped here, users following that setup will not receive version 0.2.0 and may combine the older Entra ID module with the newly transitive 0.2.0 core module; update the Maven example alongside this bump.

AGENTS.md reference: AGENTS.md:L40-L41

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