[2.0] Fix CI (backport #2301)

[mergify]

Had to update the Rust version of the coverage job because one of grcov's dependencies now requires 1.74.
Also cherry-picked #2048

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This is an automatic backport of pull request #2301 done by Mergify.

[mergify]

Cherry-pick of 2cc3923 has failed:

On branch mergify/bp/release/2.0/pr-2301
Your branch is up to date with 'origin/release/2.0'.

You are currently cherry-picking commit 2cc3923c3.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   .circleci/config.yml

no changes added to commit (use "git add" and/or "git commit -a")

Cherry-pick of 9eef309 has failed:

On branch mergify/bp/release/2.0/pr-2301
Your branch is ahead of 'origin/release/2.0' by 2 commits.
  (use "git push" to publish your local commits)

You are currently cherry-picking commit 9eef30903.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   .circleci/config.yml

no changes added to commit (use "git add" and/or "git commit -a")

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally