Replace Using by Using.resource

Release 4.31.2

Update for 4.31.1 release

Update CHANGELOG for GitBucket 4.31.0 release

GitBucket 4.30.1

Merge pull request gitbucket#2214 from gitbucket/gitbucket-4.30.0-rel…

…ease

Updates for GitBucket 4.30.0 release

Release note for 4.29.0

Merge pull request gitbucket#2138 from gitbucket/gitbucket-4.28.0

GitBucket 4.28.0 release

Preparation of GitBucket 4.27.0 release