Style: Match file name casings of C# source files for Utility commands (#9329)

Renames C# source files for `Microsoft.Powershell.Commands.Utility` to follow a common file name casing scheme.

## PR Context

This PR is only a style change and doesn't affect any logic.

src/Microsoft.PowerShell.Commands.Utility/Microsoft.PowerShell.Commands.Utility.csproj

@@ -25,7 +25,7 @@
     <Compile Remove="commands\utility\FormatAndOutput\OutGridView\ScalarTypeColumnInfo.cs" />
     <Compile Remove="commands\utility\FormatAndOutput\OutGridView\TableView.cs" />
     <Compile Remove="commands\utility\FormatAndOutput\out-printer\PrinterLineOutput.cs" />
-    <Compile Remove="commands\utility\FormatAndOutput\out-printer\out-printer.cs" />
+    <Compile Remove="commands\utility\FormatAndOutput\out-printer\Out-Printer.cs" />
     <Compile Remove="commands\utility\ShowCommand\ShowCommand.cs" />
     <Compile Remove="commands\utility\ShowCommand\ShowCommandCommandInfo.cs" />
     <Compile Remove="commands\utility\ShowCommand\ShowCommandModuleInfo.cs" />
@@ -33,7 +33,7 @@
     <Compile Remove="commands\utility\ShowCommand\ShowCommandParameterSetInfo.cs" />
     <Compile Remove="commands\utility\ShowCommand\ShowCommandParameterType.cs" />
     <Compile Remove="commands\utility\ShowCommand\ShowCommandProxy.cs" />
-    <Compile Remove="commands\utility\update-list.cs" />
+    <Compile Remove="commands\utility\Update-List.cs" />
     <Compile Remove="singleshell\installer\MshUtilityMshSnapin.cs" />
     <Compile Remove="gen\FormatAndOut_out_gridview.cs" />
     <Compile Remove="gen\UtilityMshSnapinResources.cs" />