Use fine grained token for component-owners.yml (#4924)

Author: svrnm

.github/workflows/component-owners.yml

@@ -1,7 +1,6 @@
 name: Component owners
 on:
-  workflow_dispatch:
-  # pull_request_target:
+  pull_request_target:
 
 jobs:
   run_self:
@@ -15,5 +14,5 @@ jobs:
       - uses: dyladan/[email protected]
         with:
           config-file: .github/component-owners.yml
-          repo-token: ${{ secrets.OPENTELEMETRYBOT_GITHUB_TOKEN }}
+          repo-token: ${{ secrets.OPENTELEMETRYBOT_OPENTELEMETRY_IO_PAT }}
           assign-owners: false