Merged PR 33056: Update pipeline to sign .ps1 files

Update pipeline to sign .ps1 files

----
#### AI description  (iteration 1)
#### PR Classification
Pipeline update to include additional file types for signing.

#### PR Summary
This pull request updates the pipeline configuration to sign `.ps1` files in addition to the existing file types.
- Updated `/.pipelines/PSResourceGet-Official.yml` to include `**\*.ps1` in the `files_to_sign` parameter.

Author: alerickson

.pipelines/PSResourceGet-Official.yml

@@ -152,7 +152,7 @@ extends:
           inputs:
             command: 'sign'
             signing_profile: external_distribution
-            files_to_sign: '**\*.psd1;**\*.psm1;**\*.ps1xml;**\Microsoft*.dll'
+            files_to_sign: '**\*.ps1;**\*.psd1;**\*.psm1;**\*.ps1xml;**\Microsoft*.dll'
             search_root: $(signSrcPath)
 
         - pwsh: |