4.21.0 Release Prep (#9201)

* 4.21.0 Release Prep

* Updated release notes

---------

Co-authored-by: v-smanchem <[email protected]>

Author: v-imohammad

build/common.props

@@ -4,7 +4,7 @@
     <TargetFramework>netstandard2.1</TargetFramework>
     <LangVersion>latest</LangVersion>
     <MajorVersion>4</MajorVersion>
-    <MinorVersion>20</MinorVersion>
+    <MinorVersion>21</MinorVersion>
     <PatchVersion>0</PatchVersion>
     <BuildNumber Condition="'$(BuildNumber)' == '' ">0</BuildNumber>
     <PreviewVersion></PreviewVersion>        

release_notes.md

@@ -3,9 +3,6 @@
 <!-- Please add your release notes in the following format:
 - My change description (#PR)
 -->
-- Consume diagnostic events raised by the WebJobs SDK for Application Insights flushing issues: see [PR](https://github.com/Azure/azure-webjobs-sdk/pull/2939)
-- Update Node.js Worker Version to [3.6.1](https://github.com/Azure/azure-functions-nodejs-worker/releases/tag/v3.6.1)
-- Support for HttpContext.RequestAborted cancellation token for Http requests (#9159)
 
 **Release sprint:** Sprint 142
-[ [bugs](https://github.com/Azure/azure-functions-host/issues?q=is%3Aissue+milestone%3A%22Functions+Sprint+142%22+label%3Abug+is%3Aclosed) | [features](https://github.com/Azure/azure-functions-host/issues?q=is%3Aissue+milestone%3A%22Functions+Sprint+142%22+label%3Afeature+is%3Aclosed) ]
+[ [bugs](https://github.com/Azure/azure-functions-host/issues?q=is%3Aissue+milestone%3A%22Functions+Sprint+143%22+label%3Abug+is%3Aclosed) | [features](https://github.com/Azure/azure-functions-host/issues?q=is%3Aissue+milestone%3A%22Functions+Sprint+143%22+label%3Afeature+is%3Aclosed) ]