Release 4.6.
Update CHANGELOG for release 4.6.
Revert "Avoid new features added in 4.0 in C/C++ examples."
Add Zig computed-continue optimization
Actions(deps): Bump actions/setup-python from 6 to 7
Fix negative char2class[] index on high-byte input in libre2c DFA matchers
Actions(deps): Bump actions/cache from 5 to 6
Actions(deps): Bump actions/checkout from 6 to 7