chore(workflow): add bug to exempt list (americanexpress#221)

Author: James Singleton

.github/workflows/stale.yml

@@ -16,7 +16,7 @@ jobs:
         stale-issue-message: 'This issue is stale because it has been open 30 days with no activity.'
         stale-pr-message: 'This pull request is stale because it has been open 30 days with no activity.'
         stale-issue-label: 'stale-issue'
-        exempt-issue-labels: 'enhancement,documentation,good-first-issue,question'
+        exempt-issue-labels: 'enhancement,documentation,good-first-issue,question,bug'
         stale-pr-label: 'stale-pr'
         exempt-pr-labels: 'work-in-progress'
         days-before-stale: 30