…java into release/3.5.4

* Changing release plugin

* Deploy working

* Rolling back to snapshot

* [maven-release-plugin] prepare release analytics-parent-3.5.4

* [maven-release-plugin] prepare for next development iteration

* putting back release instructions

…java into release/3.5.4

…to response-status-updates

- Add Authorization header with Basic auth to all requests
- Reduce retry backoff times for faster recovery (100ms base, 1min cap)
- Respect Retry-After header with 5-minute max cap
- Always include X-Retry-Count header in requests
- Consolidate SegmentService upload methods
- Increase max flush attempts to accommodate shorter backoff times

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Remove 413 (Payload Too Large) from retryable status codes
  Payload size won't shrink on retry, so retrying is pointless

- Verify 503 Retry-After handling matches spec
  503 checks Retry-After header first, falls back to exponential backoff

- Add test for 413 non-retryable behavior
- Add test for Retry-After delay mechanism (validates cap logic)
  The 300-second cap is enforced at AnalyticsClient.java:556-558

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>