**Breaking Changes**:
- The minimum supported Rust version was bumped to **1.66.0** due to CI workflow misconfiguration.
**Fixes**:
- Switch to checked version of `from_secs_f64` in `timestamp_to_datetime` function to prevent panics (554) by olksdr
**Internal**:
- Disable unnecessary default regex features for `sentry-backtrace` (552) by xfix
- Use correct Rust toolchain for MSRV jobs (555) by kamilogorek