Add new developer as trigger of blossom-ci [skip ci] (Project-MONAI#531)

Fixes # .

### Description
A few sentences describing the changes proposed in this pull request.

### Status
**Ready/Work in progress/Hold**

### Please ensure all the checkboxes:
<!--- Put an `x` in all the boxes that apply, and remove the not
applicable items -->
- [x] Codeformat tests passed locally by running `./runtests.sh
--codeformat`.
- [ ] In-line docstrings updated.
- [ ] Update `version` and `changelog` in `metadata.json` if changing an
existing bundle.
- [ ] Please ensure the naming rules in config files meet our
requirements (please refer to: `CONTRIBUTING.md`).
- [ ] Ensure versions of packages such as `monai`, `pytorch` and `numpy`
are correct in `metadata.json`.
- [ ] Descriptions should be consistent with the content, such as
`eval_metrics` of the provided weights and TorchScript modules.
- [ ] Files larger than 25MB are excluded and replaced by providing
download links in `large_file.yml`.
- [ ] Avoid using path that contains personal information within config
files (such as use `/home/your_name/` for `"bundle_root"`).


Add Yun Liu as trigger of blossom-ci

Signed-off-by: YanxuanLiu <[email protected]>
Co-authored-by: Yiheng Wang <[email protected]>

.github/workflows/blossom-ci.yml

@@ -48,6 +48,7 @@ jobs:
       wyli,\
       Nic-Ma,\
       yiheng-wang-nv,\
+      KumoLiu,\
       ', format('{0},', github.actor)) && github.event.comment.body == '/build'
     steps:
       - name: Check if comment is issued by authorized person