docs: update release notes

docs/release-notes/release-notes-0.19.3.md

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+# Release Notes
+- [Bug Fixes](#bug-fixes)
+- [New Features](#new-features)
+    - [Functional Enhancements](#functional-enhancements)
+    - [RPC Additions](#rpc-additions)
+    - [lncli Additions](#lncli-additions)
+- [Improvements](#improvements)
+    - [Functional Updates](#functional-updates)
+    - [RPC Updates](#rpc-updates)
+    - [lncli Updates](#lncli-updates)
+    - [Breaking Changes](#breaking-changes)
+    - [Performance Improvements](#performance-improvements)
+    - [Deprecations](#deprecations)
+- [Technical and Architectural Updates](#technical-and-architectural-updates)
+    - [BOLT Spec Updates](#bolt-spec-updates)
+    - [Testing](#testing)
+    - [Database](#database)
+    - [Code Health](#code-health)
+    - [Tooling and Documentation](#tooling-and-documentation)
+
+# Bug Fixes
+
+
+# New Features
+
+## Functional Enhancements
+
+* The default value for `gossip.msg-rate-bytes` has been
+  [increased](https://github.com/lightningnetwork/lnd/pull/10096) from 100KB to
+  1MB, and `gossip.msg-burst-bytes` has been increased from 200KB to 2MB.
+
+## RPC Additions
+
+
+## lncli Additions
+
+# Improvements
+
+## Functional Updates
+
+
+## RPC Updates
+
+## lncli Updates
+
+## Code Health
+
+
+## Breaking Changes
+
+## Performance Improvements
+
+
+## Deprecations
+
+# Technical and Architectural Updates
+
+## BOLT Spec Updates
+
+## Testing
+
+## Database
+
+## Code Health
+
+## Tooling and Documentation
+
+# Contributors (Alphabetical Order)
+
+* Yong Yu