chore(release): prepare v25.2.0 (#302)

## Summary

- Bumps VERSION from 25.1.0 to 25.2.0 in `pydgraph/meta.py`
- Adds v25.2.0 changelog entry covering 12 commits since v25.1.0

### Highlights in this release

- **Stress tests & CI benchmarks** for performance regression tracking
(#298)
- **AbortedError pickling fix** for Celery/multiprocessing compatibility
(#299)
- **asyncio.Lock deadlock fix** in `AsyncTxn.do_request` error handling
- Dependabot security vulnerability fixes
- CI/CD pipeline improvements

### Verification

- `make build` produces `pydgraph-25.2.0.tar.gz` and
`pydgraph-25.2.0-py3-none-any.whl`
- `make test` passes (219/219)
- `trunk fmt CHANGELOG.md` passes

Author: mlwelles

CHANGELOG.md

@@ -5,6 +5,29 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project
 adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [v25.2.0] - 2026-02-25
+
+**Added**
+
+- Stress tests and CI benchmark integration for performance regression tracking
+  ([#298](https://github.com/dgraph-io/pydgraph/pull/298))
+
+**Fixed**
+
+- `AbortedError` is now picklable for Celery and multiprocessing compatibility by @shaunpatterson in
+  [#299](https://github.com/dgraph-io/pydgraph/pull/299)
+- Prevented `asyncio.Lock` deadlock in `AsyncTxn.do_request` error handling path, submitted by
+  @shaunpatterson in [#293](https://github.com/dgraph-io/pydgraph/pull/293)
+- Resolved Dependabot security vulnerability alerts
+- Fixed relative import in regenerated `api_pb2_grpc.pyi` for mypy compatibility
+
+**Chore**
+
+- Regenerated protobuf files after protobuf version update
+- Fixed CD pipeline `uv version` step incompatible with dynamic versioning
+- Skip `no-commit-to-branch` hook in CI/CD workflows
+- Applied ruff formatting to `async_client`, `client`, and `retry` modules
+
 ## [v25.1.0] - 2026-01-19
 
 **Added**

pydgraph/meta.py

@@ -3,4 +3,4 @@
 
 """Metadata about this package."""
 
-VERSION = "25.1.0"
+VERSION = "25.2.0"