[KYUUBI apache#4377] Grant execute permission to release scripts

### _Why are the changes needed?_

The release-related shell scripts should have execution permission.

### _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.readthedocs.io/en/master/develop_tools/testing.html#running-tests) locally before make a pull request

Closes apache#4377 from pan3793/x.

Closes apache#4377

fb727ad [Cheng Pan] Grant execute permission to release scripts

Authored-by: Cheng Pan <chengpan@apache.org>
Signed-off-by: Cheng Pan <chengpan@apache.org>