Backport mu-wpcom-plugin 2.0.18, jetpack 13.1-beta Changes (#35448)

* Changelog and readme.txt edits.

* Amend readme.txt

* Init new cycle

Committed via a GitHub action: https://github.com/Automattic/jetpack/actions/runs/7789159812

CHANGELOG.md

@@ -5,17 +5,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [2.3.0-alpha] - unreleased
-
-This is an alpha version! The changes listed here are not final.
-
+## [2.3.0] - 2024-02-05
 ### Added
-- Add rate limiter to the package versions endpoint calls.
+- Add rate limiter to the package versions endpoint calls. [#35379]
 
 ### Changed
-- Adjust 'get_site_id()' method to return null if there's no blog ID.
-- Jetpack Connection: Add jetpack_package_versions to Sync
-- Updated package dependencies.
+- Adjust 'get_site_id()' method to return null if there's no blog ID. [#35004]
+- Adjust 'get_site_id()' method to return null if there's no blog ID. [#35006]
+- Jetpack Connection: Add jetpack_package_versions to Sync [#35409]
+- Updated package dependencies. [#35384]
 
 ## [2.2.0] - 2024-01-18
 ### Added
@@ -962,7 +960,7 @@ This is an alpha version! The changes listed here are not final.
 
 - Separate the connection library into its own package.
 
-[2.3.0-alpha]: https://github.com/Automattic/jetpack-connection/compare/v2.2.0...v2.3.0-alpha
+[2.3.0]: https://github.com/Automattic/jetpack-connection/compare/v2.2.0...v2.3.0
 [2.2.0]: https://github.com/Automattic/jetpack-connection/compare/v2.1.1...v2.2.0
 [2.1.1]: https://github.com/Automattic/jetpack-connection/compare/v2.1.0...v2.1.1
 [2.1.0]: https://github.com/Automattic/jetpack-connection/compare/v2.0.3...v2.1.0

src/class-package-version.php

@@ -12,7 +12,7 @@
  */
 class Package_Version {
 
-	const PACKAGE_VERSION = '2.3.0-alpha';
+	const PACKAGE_VERSION = '2.3.0';
 
 	const PACKAGE_SLUG = 'connection';