Upgrade jflex.
Change doesn't alter the behavior of any of the analyzers (unicode
version or grammar refactorings), just the minimal to get new tooling
working.
Most cases of C-style array declarations have been switched. The Google Java Format, that which we adhere to, disallows C-style array declarations: https://google.github.io/styleguide/javaguide.html#s4.8.3-arrays
Some cases (esp. Snowball) can't be updated.
* LUCENE-9909: Some jflex regeneration tasks should have proper dependencies and also check the checksums of included files.
* Force a dependency on low-level spotless tasks so that they're always properly ordered (hell!). Update ASCIITLD and regenerate the remaining code. Add cross-dependencies between generation tasks that take includes as input.