add a workflow dispatch for the tested up to version action (#90)

* add a test for the validate plugin version

* remove test and add workflow dispatch

.github/workflows/validate-plugin-version.yml

@@ -2,6 +2,7 @@ name: Validate Tested Up To Version
 on:
   schedule:
     - cron: '0 0 * * 0'
+  workflow_dispatch:
 
 permissions:
   pull-requests: write