use a table for message description

.github/workflows/vendor.yml

@@ -34,21 +34,25 @@ jobs:
           Set-GHVariable -Name COUNT_UPDATED -Value $count
           $newVersion = (Get-Content .\vendor\sources.json | ConvertFrom-Json)
           $listUpdated = ""
-          $updateMessage = ""
+          $updateMessage = "| Name | Old Version | New Version |`n| :--- | ---- | ---- |`n"
           foreach ($s in $newVersion) {
             $oldVersion = ($currentVersion | Where-Object {$_.name -eq $s.name}).version
             if ($s.version -ne $oldVersion) {
               $listUpdated += "$($s.name), "
-              $updateMessage += "- **$($s.name)** ($oldVersion → **$($s.version)**)\n"
+              $updateMessage += "| **$($s.name)** | $oldVersion | **$($s.version)**|`n"
             }
           }
           Set-GHVariable -Name LIST_UPDATED -Value $listUpdated.Trim(', ')
-          Set-GHVariable -Name UPDATE_MESSAGE -Value $updateMessage
+          Set-GHVariable -Name UPDATE_MESSAGE -Value [System.Web.HTTPUtility]::UrlEncode($updateMessage)
 
     - uses: peter-evans/create-pull-request@v4
       with:
         title: 'Updates to `${{ env.COUNT_UPDATED }}` vendored dependencies'
-        body: '### Automatically updated `${{ env.COUNT_UPDATED }}` dependencies:\n\n${{ env.UPDATE_MESSAGE }}\n\n---\nPlease verify and then **Merge** the pull request to update.'
+        body: |
+          ### Automatically updated `${{ env.COUNT_UPDATED }}` dependencies:
+          ${{ env.UPDATE_MESSAGE }}
+          ---
+          Please verify and then **Merge** the pull request to update.
         commit-message: 'Update vendored dependencies (${{ env.LIST_UPDATED }})'
         branch: update-vendor
         base: master