* chore: update Go version to 1.25.1 and dependencies
- Updated Dockerfile to use Go 1.25.1 for both builder and final images.
- Modified README files (Japanese, Chinese Simplified, Chinese Traditional, and English) to reflect the new Go version requirement of 1.25.1.
- Updated go.mod to specify Go 1.25 and updated dependencies:
- Upgraded hugo from v0.147.6 to v0.149.1
- Upgraded testify from v1.10.0 to v1.11.1
- Upgraded other indirect dependencies to their latest versions.
- Updated go.sum to reflect the changes in dependencies.
* fix: update golangci-lint to use latest version and install mode