ci: FM update member message

Author: nikitabelonogov

.github/workflows/follow-merge-dispatch.yml

@@ -52,7 +52,7 @@ jobs:
               body: [
                 'Hi @${{ github.actor }}!',
                 '',
-                `Unfortunately you don't have membership in ${owner} organization, your PR wasn't synced with ${owner}/${{ env.DOWNSTREAM_REPOSITORY }}.`
+                `Unfortunately you don't have membership in ${owner} organization, Follow Merge dispatch is skipped.`
               ].join('\n')
             });
             throw `${{ github.actor }} don't have membership in ${owner} organization`