Bumping minor version and removing old notes from release_notes.md (#8540)

Author: VpOfEngineering

build/common.props

@@ -4,7 +4,7 @@
     <TargetFramework>netstandard2.1</TargetFramework>
     <LangVersion>latest</LangVersion>
     <MajorVersion>4</MajorVersion>
-    <MinorVersion>8</MinorVersion>
+    <MinorVersion>9</MinorVersion>
     <PatchVersion>0</PatchVersion>
     <BuildNumber Condition="'$(BuildNumber)' == '' ">0</BuildNumber>
     <PreviewVersion></PreviewVersion>        

release_notes.md

@@ -5,7 +5,6 @@
 - Update Python Worker Version to [4.3.0](https://github.com/Azure/azure-functions-python-worker/releases/tag/4.3.0)
 
 - Surface exception type and details from out-of-proc user code to App Insights (#8314)
-- Updated Java Worker Version to [2.3.1](https://github.com/Azure/azure-functions-java-worker/releases/tag/2.3.1)
 
-**Release sprint:** Sprint 123
-[ [bugs](https://github.com/Azure/azure-functions-host/issues?q=is%3Aissue+milestone%3A%22Functions+Sprint+123%22+label%3Abug+is%3Aclosed) | [features](https://github.com/Azure/azure-functions-host/issues?q=is%3Aissue+milestone%3A%22Functions+Sprint+123%22+label%3Afeature+is%3Aclosed) ]
+**Release sprint:** Sprint 124
+[ [bugs](https://github.com/Azure/azure-functions-host/issues?q=is%3Aissue+milestone%3A%22Functions+Sprint+124%22+label%3Abug+is%3Aclosed) | [features](https://github.com/Azure/azure-functions-host/issues?q=is%3Aissue+milestone%3A%22Functions+Sprint+124%22+label%3Afeature+is%3Aclosed) ]