### _Why are the changes needed?_ This PR aims to bump [antlr4](https://github.com/antlr/antlr4) from 4.8 to 4.9.3. Version 4.8 was released on Jan 21, 2020, It's been nearly three years, and there have been a lot of bug fixes during that time, see more at [change list](https://github.com/antlr/antlr4/compare/4.8...4.9.3). ### _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 - [x] [Run test](https://kyuubi.apache.org/docs/latest/develop_tools/testing.html#running-tests) locally before make a pull request Closes #4039 from Yikf/bump-antlr4. Closes #4039 24aed3a7 [Yikf] Bump Antlr4 from 4.8 to 4.9.3 Authored-by: Yikf <yikaifei1@gmail.com> Signed-off-by: Cheng Pan <chengpan@apache.org> |
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