test: move BOM fixture out of a template literal (no-irregular-whitespace)

Author: Andy00L

src/commands/test.test.ts

@@ -3414,12 +3414,13 @@ describe('runExport / runImport', () => {
     const file = join(dir, 'def.testsprite.json');
     writeFileSync(
       file,
-      `${JSON.stringify({
-        schemaVersion: 1,
-        projectId: 'project_alice',
-        type: 'backend',
-        name: 'BOM test',
-      })}`,
+      '' +
+        JSON.stringify({
+          schemaVersion: 1,
+          projectId: 'project_alice',
+          type: 'backend',
+          name: 'BOM test',
+        }),
       'utf8',
     );
     const fetchImpl = (async () =>