Upgrade PowerShell worker to 2.0.448 (#6472)

* Upgrade PowerShell worker to 2.0.448

* Update release notes

* Fix release link

Author: AnatoliB

release_notes.md

@@ -0,0 +1,6 @@
+### Release notes
+<!-- Please add your release notes in the following format:
+- My change description (#PR)
+ -->
+
+- Upgrade PowerShell Workers to 2.0.448 ([Release Notes](https://github.com/Azure/azure-functions-powershell-worker/releases/tag/v2.0.448))

src/WebJobs.Script/WebJobs.Script.csproj

@@ -40,7 +40,7 @@
     <PackageReference Include="Microsoft.Azure.AppService.Proxy.Client" Version="2.0.8100001-0126c21e" />
     <PackageReference Include="Microsoft.Azure.Functions.JavaWorker" Version="1.7.3-SNAPSHOT" />
     <PackageReference Include="Microsoft.Azure.Functions.NodeJsWorker" Version="1.2.2" />
-    <PackageReference Include="Microsoft.Azure.Functions.PowerShellWorker" Version="2.0.292" />
+    <PackageReference Include="Microsoft.Azure.Functions.PowerShellWorker" Version="2.0.448" />
     <PackageReference Include="Microsoft.Azure.WebJobs" Version="3.0.19" />
     <PackageReference Include="Microsoft.Azure.WebJobs.Extensions" Version="4.0.1" />
     <PackageReference Include="Microsoft.Azure.WebJobs.Extensions.Http" Version="3.0.8" />