chore(deps): Bump deps

[Dirreke]

Glad to see the PR moving again.
This PR will bump a series of dependencies.

Bump arc-swap from 1.2 to 1.6.
Bump humantime from 2.0 to 2.1.
Bump serde_yaml from 0.8.4 to 0.9.
Bump toml from 0.5 to 0.8.
Bump parking_lot from 2.0 to 2.1.
Bump derivative from 2.1.1 to 2.2.
Bump tempfile from 3.1.0 to 3.8.

[westy92]

I was about to do this. Thanks for beating me to it!

[estk]

rebase please

[westy92]

We also might need to bump MSRV.

[westy92]

Toml needs 1.67

[Dirreke]

Is it ok if I bump MSRV in this PR?

[estk]

My thinking with MSRV is that I like to have a release that is ~ 1yr old. These bits will take some time to release so I think 1.67 is fine.

[estk]

Actually, now that I think of it, let's do 1.66, you'll need to update the CI as well.

[Dirreke]

I try to use 1.66 and I found it doesn't make any sense, because serde_spanned and toml_datetime, which are the dependencies of toml both required MSRV 1.67 unless I keep toml to 0.5(then we don't need to bump MSRV).

Another choice is that we can add both serde_spanned and toml_datetime to the dependencies of log4rs and restrict the version of them.

What do you think about it?

[Dirreke]

I also changed the wrong key rust to rust-version.

[estk]

Im calling this good

[bconn98]

FYI @estk @Dirreke in the future make sure to bump the version listed in the README as well!