chore(deps): update reqwest

Update to latest version of reqwest, v0.12. This version depends on
hyper v1, while previous versions (like v0.11) rely on hyper v0.14.

This hyper upgrade is massive, having a unified version of hyper inside
of projects consuming the tough crate is beneficial. For example, hyper
testing frameworks can work only with one version of the library at a
time.

`cargo deny` had to be configured to ignore some duplicated crates.
The reqwest update is massive, is the pinnacle of a major update of hyper.
A lot of hyper dependencies received major bumps too.

Some dependencies of tough (including development only ones), have not
been updated to consume these new crates.

Signed-off-by: Flavio Castelli <[email protected]>