Bump antlr4 from 4.9.1 to 4.9.2 (#7536)
Bump antlr4 from 4.9.1 to 4.9.2 (#7536)

Bumps [antlr4](https://github.com/antlr/antlr4) from 4.9.1 to 4.9.2.
- [Release notes](https://github.com/antlr/antlr4/releases)
- [Changelog](https://github.com/antlr/antlr4/blob/master/CHANGES.txt)
- [Commits](https://github.com/antlr/antlr4/compare/4.9.1...4.9.2)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
sauliusg/jabref,JabRef/jabref,Siedlerchr/jabref,Siedlerchr/jabref,sauliusg/jabref,sauliusg/jabref,JabRef/jabref,Siedlerchr/jabref,Siedlerchr/jabref,JabRef/jabref,sauliusg/jabref,JabRef/jabref