ci: add label to renovate pull requests (#863)

* ci: add label to renovate pull requests

* ci: updating stale config to exempt new label

.github/renovate.json5

@@ -1,5 +1,6 @@
 {
   "extends": ["config:base"],
+  "labels": ["dependencies"],
   "packageRules": [
     {
       // automatically merge an update of runner

.github/stale.yml

@@ -18,8 +18,9 @@ exemptLabels:
   - refactor
   - documentation
   - chore
-  - needs-investigation
   - bug
+  - dependencies
+  - needs-investigation
 
 # Set to true to ignore issues in a project (defaults to false)
 exemptProjects: false