chore: update stalebot configurations (#122)

* Skip adding stale label on any issues/PRs with any milestone
* Add issue/PR specific days before stale/close values
* Update exempt labels
* Update dependabot.yaml [skip ci]

.github/dependabot.yml

@@ -6,5 +6,5 @@ updates:
     schedule:
       interval: "daily"
     commit-message:
-      prefix: "[skip ci]"
+      prefix: "chore: [skip ci]"
       include: "scope"

.github/workflows/stale.yaml

@@ -37,7 +37,10 @@ jobs:
           close-pr-message: >
             Closing this PR after a prolonged period of inactivity. Please create a new PR
             if the changes of the PR are still relevant.
-          exempt-issue-labels: 'awaiting-approval,work-in-progress,help-wanted'
-          exempt-pr-labels: 'awaiting-approval,work-in-progress,help-wanted'
-          days-before-stale: 30
-          days-before-close: 7
+          exempt-all-milestones: true
+          exempt-issue-labels: 'awaiting-inputs,work-in-progress,help-wanted'
+          exempt-pr-labels: 'awaiting-inputs,work-in-progress,help-wanted'
+          days-before-issue-stale: 90
+          days-before-issue-close: 15
+          days-before-pr-stale: 30
+          days-before-pr-close: 7