Exporter release 1.0.0b53

[rads-1996]

1.0.0b53 (2026-06-03)

Features Added

• Read for global feature sdkstats bitmap and add a 15 second delay timer
  (#47031)
• Use APPLICATIONINSIGHTS_PYTHON_ATTACHTYPE environment variable in _is_attach_enabled to
  reliably detect successful auto-instrumentation attach, with fallback to legacy path-based detection
  (#46955)
• Safeguard URL redirection issues
  (#47265)
• Add client-side token-bucket rate limiter for telemetry export
  (#46999)

Bugs Fixed

• Validate QuickPulse redirect targets against trusted Azure domains
  (#46966)
• Fix retry amplification storm in Azure Monitor OpenTelemetry exporter
  (#47002)

[Copilot]

Pull request overview

Updates the azure-monitor-opentelemetry-exporter release notes to finalize the 1.0.0b53 entry for an upcoming release by stamping the release date and listing the included features and bug fixes.

Changes:

• Convert 1.0.0b53 from (Unreleased) to a dated release entry.
• Add missing 1.0.0b53 feature and bug-fix bullets (rate limiter, redirect hardening, retry storm fix).
• Minor changelog section formatting adjustments.