Add defaults and concurrency

Author: GOB52

.github/workflows/Arduino-Lint-Check.yml

@@ -6,6 +6,14 @@ on:
     branches: [ master, main ]
   workflow_dispatch:
 
+defaults:
+  run:
+    shell: bash
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   lint:
     name: Lint Check