deps: bump libp2p-identity from 0.2.8 to 0.2.9

[dependabot]

Bumps libp2p-identity from 0.2.8 to 0.2.9.

Release notes

Sourced from libp2p-identity's releases.

libp2p-v0.53.2

See individual changelogs for details.

libp2p-v0.53.1

See individual changelogs for details.

libp2p-v0.53.0

The most ergonomic version of rust-libp2p yet!

We've been busy again, with over 250 PRs being merged into master since v0.52.0 (excluding dependency updates).

Backwards-compatible features

Numerous improvements landed as patch releases since the v0.52.0 release, for example a new, type-safe SwarmBuilder that also encompasses the most common transport protocols:

let mut swarm = libp2p::SwarmBuilder::with_new_identity()
    .with_tokio()
    .with_tcp(
        tcp::Config::default().port_reuse(true).nodelay(true),
        noise::Config::new,
        yamux::Config::default,
    )?
    .with_quic()
    .with_dns()?
    .with_relay_client(noise::Config::new, yamux::Config::default)?
    .with_behaviour(|keypair, relay_client| Behaviour {
        relay_client,
        ping: ping::Behaviour::default(),
        dcutr: dcutr::Behaviour::new(keypair.public().to_peer_id()),
    })?
    .build();

The new builder makes heavy use of the type-system to guide you towards a correct composition of all transports. For example, it is important to compose the DNS transport as a wrapper around all other transports but before the relay transport. Luckily, you no longer need to worry about these details as the builder takes care of that for you! Have a look yourself if you dare here but be warned, the internals are a bit wild :)

Some more features that we were able to ship in v0.52.X patch-releases include:

• stable QUIC implementation
• for rust-libp2p compiled to WASM running in the browser
  • WebTransport support
  • WebRTC support
• UPnP implementation to automatically configure port-forwarding with ones gateway
• option to limit connections based on available memory

We always try to ship as many features as possible in a backwards-compatible way to get them to you faster. Often times, these come with deprecations to give you a heads-up about what will change in a future version. We advise updating to each intermediate version rather than skipping directly to the most recent one, to avoid missing any crucial deprecation warnings. We highly recommend you stay up-to-date with the latest version to make upgrades as smooth as possible.

Some improvments we unfortunately cannot ship in a way that Rust considers a non-breaking change but with every release, we attempt to smoothen the way for future upgrades.

#[non_exhaustive] on key enums

... (truncated)

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[dariusc93]

@dependabot merge