tests: Fix concurency test on Windows

Author: penberg

integration-tests/tests/concurrency.test.js

@@ -184,7 +184,7 @@ test("Concurrent operations with timeout should handle busy database", async (t)
 
     await conn1.close();
     await conn2.close();
-    fs.unlinkSync(path);
+    await fs.promises.unlink(path);
 });  
 
 
@@ -197,7 +197,7 @@ const connect = async (path_opt, options = {}) => {
 
 const cleanup = async (context) => {
     await context.db.close();
-    fs.unlinkSync(context.path);
+    await fs.promises.unlink(context.path);
 };
 
 const generateUUID = () => {