Set version to 1.9.3

RELEASENOTES.md

@@ -7,6 +7,38 @@ This document contains the release notes for `rippled`, the reference server imp
 
 Have new ideas? Need help with setting up your node? Come visit us [here](https://github.com/xrplf/rippled/issues/new/choose)
 
+# Introducing XRP Ledger version 1.9.3
+
+Version 1.9.3 of `rippled`, the reference server implementation of the XRP Ledger protocol is now available. This release corrects minor technical flaws with the code that loads configured amendment votes after a startup and the copy constructor of `PublicKey`.
+
+## Install / Upgrade
+
+On supported platforms, see the [instructions on installing or updating `rippled`](https://xrpl.org/install-rippled.html).
+
+## Changelog
+
+## Contributions
+
+This releases contains the following bug fixes:
+
+- **Change by-value to by-reference to persist vote**: A minor technical flaw, caused by use of a copy instead of a reference, resulted in operator-configured "yes" votes to not be properly loaded after a restart. ([#4256](https://github.com/XRPLF/rippled/pull/4256))
+- **Properly handle self-assignment of PublicKey**: The `PublicKey` copy assignment operator mishandled the case where a `PublicKey` would be assigned to itself, and could result in undefined behavior. 
+
+### GitHub
+
+The public source code repository for `rippled` is hosted on GitHub at <https://github.com/XRPLF/rippled>.
+
+We welcome contributions, big and small, and invite everyone to join the community of XRP Ledger developers and help us build the Internet of Value.
+
+### Credits
+
+The following people contributed directly to this release:
+
+- Howard Hinnant <[email protected]>
+- Crypto Brad Garlinghouse <[email protected]>
+- Wo Jake <[email protected]>
+
+
 # Introducing XRP Ledger version 1.9.2
 
 Version 1.9.2 of `rippled`, the reference server implementation of the XRP Ledger protocol, is now available. This release includes several fixes and improvements, including a second new fix amendment to correct a bug in Non-Fungible Tokens (NFTs) code, a new API method for order book changes, less noisy logging, and other small fixes.

src/ripple/protocol/impl/BuildInfo.cpp

@@ -33,7 +33,7 @@ namespace BuildInfo {
 //  and follow the format described at http://semver.org/
 //------------------------------------------------------------------------------
 // clang-format off
-char const* const versionString = "1.9.2"
+char const* const versionString = "1.9.3"
 // clang-format on
 
 #if defined(DEBUG) || defined(SANITIZER)