[Repo] Update CHANGELOGs

[martincostello]

Changes

Add links to GitHub Security Advisories to CHANGELOGs.

Merge requirement checklist

• CONTRIBUTING guidelines followed (license requirements, nullable enabled, static analysis, etc.)
• Unit tests added/updated
• Appropriate CHANGELOG.md files updated for non-trivial changes
• Changes in public API reviewed (if applicable)

[Copilot]

Pull request overview

Updates multiple component CHANGELOG.md files to include direct references to relevant GitHub Security Advisories (GHSA) for previously released fixes, improving traceability between security advisories and shipped mitigations.

Changes:

• Add GHSA links to release notes for response-size limiting changes (AWS Sampler, AWS/Azure Resources, OneCollector exporter, OpAmp client).
• Add GHSA link references to prior URL query redaction breaking changes (HTTP and ASP.NET instrumentations).

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/OpenTelemetry.Sampler.AWS/CHANGELOG.md	Adds GHSA link for the sampling rules response-body size limit entry.
src/OpenTelemetry.Resources.Azure/CHANGELOG.md	Adds GHSA link for metadata service response-body consumption limit entry.
src/OpenTelemetry.Resources.AWS/CHANGELOG.md	Adds GHSA link for metadata service response-body consumption limit entry.
src/OpenTelemetry.OpAmp.Client/CHANGELOG.md	Adds GHSA link for oversized OpAMP response size limit entry.
src/OpenTelemetry.Instrumentation.Http/CHANGELOG.md	Adds GHSA link reference to the URL query redaction breaking change entry.
src/OpenTelemetry.Instrumentation.AspNet/CHANGELOG.md	Adds GHSA link reference to the URL query redaction breaking change entry.
src/OpenTelemetry.Exporter.OneCollector/CHANGELOG.md	Adds GHSA link for the export-failure response-body read limit entry.

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