[tagpr] update CHANGELOG.md

Author: github-actions[bot]

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+## [v0.3.3](https://github.com/sacloud/api-client-go/compare/v0.3.2...v0.3.3) - 2025-08-22
+- custom HTTP client by @shyouhei in https://github.com/sacloud/api-client-go/pull/76
+- ci: bump actions/checkout from 4 to 5 by @dependabot[bot] in https://github.com/sacloud/api-client-go/pull/75
+
 ## [v0.3.2](https://github.com/sacloud/api-client-go/compare/v0.3.1...v0.3.2) - 2025-07-03
 - Improve APIError related functions by @repeatedly in https://github.com/sacloud/api-client-go/pull/73