Merge pull request #6255 from dokku/josegonzalez-patch-3

Add ci concurrency to linting workflow

.github/workflows/lint.yml

@@ -10,6 +10,10 @@ on:
     branches:
       - 'master'
 
+concurrency:
+  group: lint-${{ github.event.pull_request.number || github.ref }}
+  cancel-in-progress: true
+
 jobs:
   hadolint:
     name: hadolint