1.4.4 rc2 release

[johnoliver]

Motivation and Context

Description

Contribution Checklist

• The code builds clean without any errors or warnings
• The PR follows the SK Contribution Guidelines and the pre-submission formatting script raises no violations
• All unit tests pass, and I have added new tests where possible
• I didn't break anyone 😄

[Copilot]

Pull Request Overview

This PR updates version references across all Maven POM files from 1.4.4-RC2-SNAPSHOT to 1.4.4-RC3-SNAPSHOT as part of the release process. It also includes changelog updates and XML formatting improvements.

• Version bump from RC2 to RC3 across all modules and dependencies
• Addition of changelog entry for 1.4.4-RC2 release notes
• XML formatting standardization across POM files

Reviewed Changes

Copilot reviewed 37 out of 37 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
pom.xml	Root parent version update to RC3
semantickernel-bom/pom.xml	BOM version update and XML formatting
semantickernel-api/pom.xml	API module version update and XML formatting
semantickernel-experimental/pom.xml	Experimental module version update
Multiple data modules	Version updates across all data storage modules
Multiple sample modules	Version updates across sample projects and demos
Multiple AI service modules	Version updates across AI service implementations
agents/semantickernel-agents-core/pom.xml	Agents module version update and XML formatting
api-test modules	Test module version updates
CHANGELOG.md	Addition of 1.4.4-RC2 release notes

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