update cargo dependencies

[webern]

Issue number:

N/A

Description of changes:

cargo update, once in tools and once in sources.
Needed to bump the version of webpki-roots-shim to match what reqwest is using.

Testing done:

cargo make, cargo make ami and cargo make repo. Ran k8s 1.17, ran a pod. Also ssh'ed in and updog check-update worked.

Also checked apiclient with the following commands, which successfully changed the motd setting.

apiclient -m PATCH -u /settings -d '{"motd": "my own value!"}'
apiclient -m POST -u /tx/commit_and_apply
apiclient -u /settings | jq .motd
# "my own value!"

Terms of contribution:

By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.

[tjkirch]

Would you please also check (1) unit tests and (2) that apiclient can change/commit/apply settings?

Does https://github.com/kbknapp/cargo-outdated show any bigger updates we need to apply? (modulo tokio, gptman) Does https://github.com/est31/cargo-udeps show anything unused? (careful with that one...)

[webern]

Expanded to include all reasonable major updates. No udeps found. Unit tests pass (btw they run in CI as well).

I still need to repeat the testing that I listed in the PR description and add to that the apiclient tests suggested above.

Created two follow-up issues #1268 and #1269 for major dep upgrades that require follow-up.

[webern]

Update: I repeated the testing (and added a test of apiclient) after dep major updates in c76670b and everything seems to be working.

[webern]

webern force-pushed the webern:bump branch from c76670b to d4ad267 now

Addresses @srgothi92 's findings.

[tjkirch]

I'm a little hesitant about updating tough, just to change the migrator code back for the re-removed lifetime stuff in 0.10, but I don't mind if you prefer it.

[webern]

webern force-pushed the webern:bump branch from d4ad267 to f2d56ed 28 seconds ago

Undo:

• fmt of sources/api/datastore/src/memory.rs
• tough version changes
• inotify version change
• reqwest version change