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### _Why are the changes needed?_
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Fix the version of `actions/checkout` in file .github/workflows/publish-snapshot.yml.
```
Error: Unable to resolve action `actions/checkout2.3.5`, unable to find version `2.3.5`
```
see https://github.com/apache/incubator-kyuubi/runs/5177066290?check_suite_focus=true for details.
### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible
- [ ] Add screenshots for manual tests if appropriate
- [ ] [Run test](https://kyuubi.apache.org/docs/latest/develop_tools/testing.html#running-tests) locally before make a pull request
Closes#1901 from cfmcgrady/ga.
Closes#1901
276380cf [Fu Chen] fix checkout version
Authored-by: Fu Chen <cfmcgrady@gmail.com>
Signed-off-by: Cheng Pan <chengpan@apache.org>
4ec88a31a5