chore(external docs): deprecate azure_monitor_logs sink (#24910)

docs: deprecate azure_monitor_logs sink

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: pront

docs/DEPRECATIONS.md

@@ -16,6 +16,7 @@ For example:
 
 - `v0.50.0` | `http-server-encoding` | The `encoding` field will be removed. Use `decoding` and `framing` instead.
 - `v0.53.0` | `buffer-bytes-events-metrics` | The `buffer_byte_size` and `buffer_events` gauges are deprecated in favor of the `buffer_size_bytes`/`buffer_size_events` metrics described in `docs/specs/buffer.md`.
+- `v0.58.0` | `azure-monitor-logs-sink` | The `azure_monitor_logs` sink is deprecated in favor of the new `azure_logs_ingestion` sink, which uses the Azure Monitor Logs Ingestion API. Users should migrate before Microsoft ends support for the old Data Collector API (scheduled for September 2026).
 
 ## To be migrated