upgrade: bump version to 1.5.2+349 for release

Author: w568w

pubspec.yaml

@@ -1,7 +1,7 @@
 name: dan_xi
 description: Maybe the best all-rounded service app for Fudan University students.
 publish_to: "none" # Remove this line if you wish to publish to pub.dev
-version: 1.5.1+348
+version: 1.5.2+349
 
 environment:
   sdk: ">=3.8.0"