Increase PR files API page size in deploy workflow

Appends '?per_page=100' to the PR files API request URL to ensure up to 100 changed files are retrieved per page, improving support for large pull requests.

Author: shaswot77

.github/workflows/deploy-plugin-pr.yml

@@ -22,7 +22,7 @@ jobs:
                   $response = Invoke-RestMethod -Uri $url -Headers @{Authorization = "token ${{ secrets.GITHUB_TOKEN }}" }
 
                   # Get changed files in the PR
-                  $filesUrl = $response.url + "/files"
+                  $filesUrl = $response.url + "/files?per_page=100"
                   $files = Invoke-RestMethod -Uri $filesUrl -Headers @{Authorization = "token ${{ secrets.GITHUB_TOKEN }}" }
 
                   Write-Output "Total files changed: $($files.Count)"