🌱 Update stale.yml, issue template label references (#3907)

Signed-off-by: afmarcum <138055109+afmarcum@users.noreply.github.com>

.github/ISSUE_TEMPLATE/bug_report.md

@@ -2,7 +2,7 @@
 name: Bug report
 about: Create a report for a problem you are encountering
 title: BUG
-labels: bug
+labels: kind/bug
 assignees: ''
 
 ---

.github/ISSUE_TEMPLATE/feature_request.md

@@ -2,7 +2,7 @@
 name: Feature request
 about: Suggest an idea for this project
 title: Feature
-labels: enhancement
+labels: kind/enhancement
 assignees: ''
 
 ---

.github/workflows/stale.yml

@@ -34,11 +34,11 @@ jobs:
     - uses: actions/stale@28ca1036281a5e5922ead5184a1bbf96e5fc984e # v3.0.18
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
-        stale-issue-message: 'This issue is stale because it has been open for 60 days with no activity.'
-        stale-pr-message: 'This pull request is stale because it has been open for 10 days with no activity'
-        exempt-issue-labels: 'priority,bug,good first issue,backlog,help wanted'
+        stale-issue-message: 'This issue has been marked stale because it has been open for 60 days with no activity.'
+        stale-pr-message: 'This pull request has been marked stale because it has been open for 10 days with no activity'
+        exempt-issue-labels: 'priority/must-do,kind/bug,good first issue,help wanted'
         exempt-issue-milestones: 'Structured results'
-        exempt-pr-labels: 'awaiting-approval,work-in-progress'
+        exempt-pr-labels: 'awaiting-approval'
         days-before-pr-stale: '10'
         days-before-pr-close: '20'
         days-before-issue-stale: '60'