Add PAT for repoman (#14904)

.vault-config/dnceng-partners-kv.yaml

@@ -61,6 +61,15 @@ secrets:
       gitHubBotAccountName: BotAccount-dotnet-bot
       requiredScopes: content
       description: "This pat is under the beta fine-grained tokens using dotnet as owner and repository specific for vscode-csharp and roslyn. The permissions are: Content - Read and write."
+
+  # Fine grained for docs, docs-desktop, docs-maui, docs-desktop, aspnetcore, scoped to issues r/w prs r/w
+  BotAccount-dotnet-bot-repoman-PAT:
+    type: github-access-token
+    parameters:
+      gitHubBotAccountSecret:
+        name: BotAccount-dotnet-bot
+        location: EngKeyVault
+      gitHubBotAccountName: dotnet-bot
 
   roslyn-dn-bot-devdiv-build-r-release-r-code-r:
     type: azure-devops-access-token