chore: add src directory to list of files included in package (#2707)

Author: nbbeeken

package.json

@@ -5,6 +5,7 @@
   "main": "lib/index.js",
   "files": [
     "lib",
+    "src",
     "etc/prepare.js",
     "mongodb.d.ts"
   ],

test/functional/bulk.test.js

@@ -1649,7 +1649,7 @@ describe('Bulk', function () {
       })
       .then(() => {
         const coll = db.collection('doesnt_matter');
-        coll.insertMany(documents, { ordered: true });
+        return coll.insertMany(documents, { ordered: true });
       })
       .finally(() => client.close());
   });
@@ -1673,7 +1673,7 @@ describe('Bulk', function () {
       })
       .then(() => {
         const coll = db.collection('doesnt_matter');
-        coll.insertMany(documents, { ordered: false });
+        return coll.insertMany(documents, { ordered: false });
       })
       .finally(() => client.close());
   });