fix warning in build.sbt
https://github.com/sbt/io/blob/02a0cfa0a6d334881064bc92a10cb33b6b43e401/io/src/main/scala/sbt/io/IO.scala#L611-L630

```
/home/runner/work/gitbucket/gitbucket/build.sbt:205: warning: method jar in object IO is deprecated (since 1.3.2): Please specify whether to use a static timestamp
  IO jar (contentMappings.map { case (file, path) => (file, path.toString) }, outputFile, manifest)
     ^
```
1 parent 0660a92 commit 956e0c63219a5be09efb1c0759e711a5325ef90c
@kenji yoshida kenji yoshida authored on 31 Jul 2021
GitHub committed on 31 Jul 2021
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build.sbt