chore: Update blunderbuss with issues/pr reviewer (#252)

Update reviewers with googleapis/api-logging-reviewers

Author: losalex

.github/blunderbuss.yml

@@ -1,5 +1,9 @@
 # Configuration for the Blunderbuss GitHub app. For more info see
 # https://github.com/googleapis/repo-automation-bots/tree/main/packages/blunderbuss
+assign_issues:
+  - googleapis/api-logging-reviewers
+assign_prs:
+  - googleapis/api-logging-reviewers
 assign_prs_by:
   - labels:
     - samples