Clean-up changelog scripts (#20779)

Co-authored-by: Wes Haggard <Wes.Haggard@microsoft.com>

eng/common/scripts/Update-ChangeLog.ps1

@@ -5,6 +5,7 @@
 # Unreleased: Default is true. If it is set to false, then today's date will be set in verion title. If it is True then title will show "Unreleased"
 # ReplaceLatestEntryTitle: Replaces the latest changelog entry title.
 
+[CmdletBinding()]
 param (
   [Parameter(Mandatory = $true)]
   [String]$Version,
@@ -74,21 +75,21 @@ if ($ChangeLogEntries.Contains($Version))
 {
     if ($ChangeLogEntries[$Version].ReleaseStatus -eq $ReleaseStatus)
     {
-        LogWarning "Version [$Version] is already present in change log with specificed ReleaseStatus [$ReleaseStatus]. No Change made."
+        LogDebug "Version [$Version] is already present in change log with specificed ReleaseStatus [$ReleaseStatus]. No Change made."
         exit(0)
     }
 
     if ($Unreleased -and ($ChangeLogEntries[$Version].ReleaseStatus -ne $ReleaseStatus))
     {
-        LogWarning "Version [$Version] is already present in change log with a release date. Please review [$ChangelogPath]. No Change made."
+        LogDebug "Version [$Version] is already present in change log with a release date. Please review [$ChangelogPath]. No Change made."
         exit(0)
     }
 
     if (!$Unreleased -and ($ChangeLogEntries[$Version].ReleaseStatus -ne $CHANGELOG_UNRELEASED_STATUS))
     {
         if ((Get-Date ($ChangeLogEntries[$Version].ReleaseStatus).Trim("()")) -gt (Get-Date $ReleaseStatus.Trim("()")))
         {
-            LogWarning "New ReleaseDate for version [$Version] is older than existing release date in changelog. Please review [$ChangelogPath]. No Change made."
+            LogDebug "New ReleaseDate for version [$Version] is older than existing release date in changelog. Please review [$ChangelogPath]. No Change made."
             exit(0)
         }
     }

eng/common/scripts/Verify-ChangeLog.ps1

@@ -1,4 +1,5 @@
 # Wrapper Script for ChangeLog Verification
+[CmdletBinding()]
 param (
   [String]$ChangeLogLocation,
   [String]$VersionString,