Updated minor version and release notes 3.21.0 (#9697)

Author: v-imohammad

build/common.props

@@ -4,7 +4,7 @@
     <TargetFramework>netstandard2.0</TargetFramework>
     <LangVersion>latest</LangVersion>
     <MajorVersion>3</MajorVersion>
-    <MinorVersion>20</MinorVersion>
+    <MinorVersion>21</MinorVersion>
     <PatchVersion>0</PatchVersion>
     <VersionPrefix>$(MajorVersion).$(MinorVersion).$(PatchVersion)</VersionPrefix>
     <Version Condition=" '$(BuildNumber)' != '' ">$(VersionPrefix)-$(BuildNumber)</Version>

release_notes.md

@@ -3,8 +3,3 @@
 - My change description (#PR)
 -->
 *Please note we have reached end-of-life (EOL) support for v3.x.* For more information on supported runtime versions, please see [here.](https://learn.microsoft.com/en-us/azure/azure-functions/functions-versions?tabs=v4&pivots=programming-language-csharp)
-
-**Release sprint:** Sprint 146
-[ [bugs](https://github.com/Azure/azure-functions-host/issues?q=is%3Aissue+milestone%3A%22Functions+Sprint+146%22+label%3Abug+is%3Aclosed) | [features](https://github.com/Azure/azure-functions-host/issues?q=is%3Aissue+milestone%3A%22Functions+Sprint+146%22+label%3Afeature+is%3Aclosed) ]
-
-- Update WebJobsScriptHostService to remove hardcoded sleep during application shut down (#9521)