chore(main): release 2.13.2 (googleapis#2412)

Author: release-please[bot]

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [2.13.2](https://github.com/googleapis/google-api-php-client/compare/v2.13.1...v2.13.2) (2023-03-23)
+
+
+### Bug Fixes
+
+* Calling class_exists with null in Google\Model ([#2405](https://github.com/googleapis/google-api-php-client/issues/2405)) ([5ed4edc](https://github.com/googleapis/google-api-php-client/commit/5ed4edc9315110a715e9763d27ee6761e1aaa00a))
+
 ## [2.13.1](https://github.com/googleapis/google-api-php-client/compare/v2.13.0...v2.13.1) (2023-03-13)