chore: bump jina version (#5849)

Author: Joan Fontanals

jina/__init__.py

@@ -61,7 +61,7 @@ def _warning_on_one_line(message, category, filename, lineno, *args, **kwargs):
 # this is managed by git tag and updated on every release
 # NOTE: this represents the NEXT release version
 
-__version__ = '3.15.1'
+__version__ = '3.15.2'
 
 # do not change this line manually
 # this is managed by proto/build-proto.sh and updated on every execution