Upgrade dependencies and set MSRV to 1.65

The dependencies were upgraded to handle [workspace inheritance
introduced in cargo 1.64][1]. MSRV was set to the minimal version
required to compile (1.65 due to usage of let else in cargo).

This PR resolves meta-rust#60. On the same note meta-rust#46 should also probably get
closed since AFAIK it's already been resolved.

[1]: rust-lang/cargo#10859

Signed-off-by: Marcel Guzik <marcel.guzik@inetum.com>