tools: use arrow function for callback in lint-sh.js
The function declaration inside an else block is odd (and violates a recommended ESLint rule). We tend to use arrow functions for callbacks anyway, so switch to that.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
The function declaration inside an else block is odd (and violates a recommended ESLint rule). We tend to use arrow functions for callbacks anyway, so switch to that.