PYTHON-5500 Mark test_dns_failures_logging as flaky

[blink1073]

Also fix the underlying just install issue.

[Jibola]

Can we split the two changes? Have the just file as its own separate quick fix?

[blink1073]

Can we split the two changes? Have the just file as its own separate quick fix?

I'm spinning a lot of plates right now, that didn't feel like it needed a ticket

[blink1073]

drivers-pr-bot please backport to v4.14

[mongodb-dbx-release-bot]

Sorry, unable to cherry-pick to v4.14, please backport manually. Here are approximate instructions:

1. Checkout backport branch and update it.

git checkout -b cherry-pick-v4.14-de332c553c2835c4626e137abd1423194c666223 v4.14

git fetch origin de332c553c2835c4626e137abd1423194c666223

2. Cherry pick the first parent branch of the this PR on top of the older branch:

git cherry-pick -x -m1 de332c553c2835c4626e137abd1423194c666223

3. You will likely have some merge/cherry-pick conflicts here, fix them and commit:

git commit -am {message}

4. Push to a named branch:

git push origin cherry-pick-v4.14-de332c553c2835c4626e137abd1423194c666223

5. Create a PR against branch v4.14. I would have named this PR:

"PYTHON-5500 Mark test_dns_failures_logging as flaky (#2480) [v4.14]"