refactor(core): Update rule typescript-eslint/no-unused-vars to not error when variable starts with _ (#4523)

* ⚡ rule and fixes

* ⚡ clean up

packages/nodes-base/nodes/ExecuteCommand/ExecuteCommand.node.ts

@@ -27,7 +27,7 @@ function execPromise(command: string): Promise<IExecReturnData> {
 		stdout: '',
 	};
 
-	return new Promise((resolve, reject) => {
+	return new Promise((resolve, _reject) => {
 		exec(command, { cwd: process.cwd() }, (error, stdout, stderr) => {
 			returnData.stdout = stdout.trim();
 			returnData.stderr = stderr.trim();