chore: set exit code

Author: nbbeeken

test/bench/granular/common.ts

@@ -1,5 +1,4 @@
 import { Suite } from 'dbx-js-tools/packages/bson-bench';
-import * as process from 'process';
 import * as path from 'path';
 import * as fs from 'fs/promises';
 
@@ -62,6 +61,7 @@ export function getMixedTestTags(documentPath: string) {
 export async function runSuiteAndWriteResults(suite: Suite) {
   const targetDirectory = path.resolve(`${__dirname}/../../etc`);
   await suite.run();
+  if (suite.errors.length) process.exitCode = 1;
   await suite.writeResults(`${targetDirectory}/${suite.name.toLowerCase()}Results.json`);
 }