docs: Add release notes for 2023.3.0

Author: rainboyan

src/docs/guide/releases/2023.x.adoc

@@ -2,6 +2,23 @@
 
 link:{github}/releases/tag/v2023.3.0[release notes]
 
+🛠 Improvements
+
+* Update README
+* Add LICENSE
+* Update documentation
+* Update github workflows - Upgrade to setup-gradle@v4
+* Update docs - Correct the github repo
+* Add docs - Use grace-doc to generate documentation - Remove unused assets
+* Setup github docs workflows
+* Streamline Gradle build scripts: using the Spring Dependency Management Plugin to manage dependencies and versions link:{github}/issues/51[#51]
+
+🚀 Dependency Upgrades
+
+* Upgrade to Grace 2023.3.0-RC1 link:{github}/issues/50[#50]
+* Upgrade to Grace 2023.3.0-RC2 link:{github}/issues/53[#53]
+* Upgrade to Grace Async 6.3.0 link:{github}/issues/54[#54]
+* Upgrade to Gradle 8.14 link:{github}/issues/52[#52]
 
 === 2023.3.0-RC1