Merge #1157

1157: Bump version of most dependencies r=carols10cents

This series of commits bumps many dependencies, with the exception of diesel (as I couldn't figure out how to update the reverse dependencies query).  In particular, this switches from `time` to `chrono` in the `cargo_registry_s3` crate.

I've also updated the contributing instructions for Ubuntu and Fedora to explicitly install `pkg-config`.

Author: bors-voyager[bot]