Update Rust crate tokio-tungstenite to 0.21

[oxide-renovate]

This PR contains the following updates:

Package	Type	Update	Change
tokio-tungstenite	workspace.dependencies	minor	0.20 -> 0.21

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Release Notes

snapview/tokio-tungstenite (tokio-tungstenite)

v0.21.0

Compare Source

• Update TLS dependencies.
• Update tungstenite to 0.21.0.

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Configuration

📅 Schedule: Branch creation - "after 8pm,before 6am" in timezone America/Los_Angeles, Automerge - "after 8pm,before 6am" in timezone America/Los_Angeles.

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

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This PR has been generated by Renovate Bot.

[oxide-renovate]

⚠ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: Cargo.lock

Command failed: cargo update --config net.git-fetch-with-cli=true --manifest-path Cargo.toml --package [email protected] --precise 0.21.0
    Updating crates.io index
error: failed to select a version for the requirement `tokio-tungstenite = "^0.20"`
candidate versions found which didn't match: 0.21.0
location searched: crates.io index
required by package `propolis-client v0.1.0 (https://github.com/oxidecomputer/propolis?rev=ff6c4df2e816eee6e7b2b0488777d30ef35ee217#ff6c4df2)`
    ... which satisfies git dependency `propolis-client` (locked to 0.1.0) of package `omicron-sled-agent v0.1.0 (/tmp/renovate/repos/github/oxidecomputer/omicron/sled-agent)`
    ... which satisfies path dependency `omicron-sled-agent` (locked to 0.1.0) of package `nexus-db-queries v0.1.0 (/tmp/renovate/repos/github/oxidecomputer/omicron/nexus/db-queries)`
    ... which satisfies path dependency `nexus-db-queries` (locked to 0.1.0) of package `omicron-omdb v0.1.0 (/tmp/renovate/repos/github/oxidecomputer/omicron/dev-tools/omdb)`
perhaps a crate was updated and forgotten to be re-vendored?

[sunshowers]

Blocked on propolis-client, and may need to be clubbed with a rustls update (#4617).

[sunshowers]

Going to close this to minimize churn.

[oxide-renovate]

Renovate Ignore Notification

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