Prepare changelog for v1.17.2 (#33638)

* Update v1.17 changelog to current version

* Remove edge / beta / stable links. Leaving them is potentially confusing. Maintaining them is error prone and of limited benefit

* Update v1.17.1 notes

* Prepare CHANGELOG.md for v1.17.2 release

CHANGELOG.md

@@ -4,15 +4,19 @@ All notable changes to this project will be documented in this file.
 Please follow the [guidance](#adding-to-this-changelog) at the bottom of this file when making changes
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html)
-and follows a [Backwards Compatability Policy](https://docs.solana.com/developing/backwards-compatibility)
+and follows a [Backwards Compatibility Policy](https://docs.solana.com/developing/backwards-compatibility)
 
-Release channels have their own copy of this changelog:
-* [edge - v1.17](#edge-channel)
-* [beta - v1.16](https://github.com/solana-labs/solana/blob/v1.16/CHANGELOG.md)
-* [stable - v1.14](https://github.com/solana-labs/solana/blob/v1.14/CHANGELOG.md)
+## [1.17.3] - Unreleased
+* Changes
+* Upgrade Notes
+
+## [1.17.2]
+* minor bug fixes and improvements
+
+## [1.17.1]
+* minor bug fixes and improvements
 
-<a name="edge-channel"></a>
-## [1.17.0] - Unreleased
+## [1.17.0]
 * Changes
   * Added a changelog.
 * Upgrade Notes