Bump Meridian version 1.5.2

PiperOrigin-RevId: 869382152

Author: santoso-wijaya

CHANGELOG.md

@@ -23,6 +23,8 @@ To release a new version (e.g. from `1.0.0` -> `2.0.0`):
 
 ## [Unreleased]
 
+## [1.5.2] - 2026-02-10
+
 * Move `schema` package as `meridian.schema`.
   * Introduce a temporary shim `schema.py` module for backwards compatibility.
     This shim will be removed in the next cut release.
@@ -449,4 +451,5 @@ To release a new version (e.g. from `1.0.0` -> `2.0.0`):
 [1.4.0]: https://github.com/google/meridian/releases/tag/v1.4.0
 [1.5.0]: https://github.com/google/meridian/releases/tag/v1.5.0
 [1.5.1]: https://github.com/google/meridian/releases/tag/v1.5.1
-[Unreleased]: https://github.com/google/meridian/compare/v1.5.1...HEAD
+[1.5.2]: https://github.com/google/meridian/releases/tag/v1.5.2
+[Unreleased]: https://github.com/google/meridian/compare/v1.5.2...HEAD

README.md

@@ -153,7 +153,7 @@ To cite this repository:
   author = {Google Meridian Marketing Mix Modeling Team},
   title = {Meridian: Marketing Mix Modeling},
   url = {https://github.com/google/meridian},
-  version = {1.5.1},
+  version = {1.5.2},
   year = {2025},
 }
 ```

meridian/version.py

@@ -14,4 +14,4 @@
 
 """Module for Meridian version."""
 
-__version__ = "1.5.1"
+__version__ = "1.5.2"