chore: release v0.21.0

[github-actions]

🤖 New release

• ipnetwork: 0.20.0 -> 0.21.0 (⚠️ API breaking changes)

⚠️ ipnetwork breaking changes

--- failure enum_marked_non_exhaustive: enum marked #[non_exhaustive] ---

Description:
A public enum has been marked #[non_exhaustive]. Pattern-matching on it outside of its crate must now include a wildcard pattern like `_`, or it will fail to compile.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#attr-adding-non-exhaustive
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.38.0/src/lints/enum_marked_non_exhaustive.ron

Failed in:
  enum IpNetworkError in /tmp/.tmpgmqBbI/ipnetwork/src/error.rs:8

Changelog

0.21.0 - 2025-01-06

Fixed

• fix for 0.0.0.0/0 network (#199)
• (deps) update rust crate serde to 1.0.200 (fix(deps): update rust crate serde to 1.0.200 #196)
• (deps) update rust crate serde to 1.0.199 (fix(deps): update rust crate serde to 1.0.199 #194)
• use associated constants (fix: use associated constants #191)

Other

• Update .gitignore
• Update publish.yml
• Update publish.yml
• Replace Ipv{4,6}Network::new_unchecked with Ipv{4,6}Network::new_checked (#203)
• Make the serde feature opt-in instead of opt-out (#200)
• Fix typo (#198)
• Update publish.yml (#195)
• (deps) update rust crate serde_json to 1.0.116 (chore(deps): update rust crate serde_json to 1.0.116 #193)
• setup release plz (chore: setup release plz #192)
• Update Rust crate criterion to 0.5.1 (#172)
• Update actions/checkout action to v4 (#182)
• rewrite core ipv6 methods to operate on u128s ( ipv6: rewrite core ipv6 methods to operate on u128s  #187)
• move to dtolnay/rust-toolchain and run clippy (github: move to dtolnay/rust-toolchain and run clippy #189)
• Hash implementation to match PartialEq (netsize: Hash implementation to match PartialEq #186)
• Update Rust crate schemars to 0.8.17 (#184)
• Add const unsafe new_unchecked to Ipv4Network & Ipv6Network (#185)
• Update Rust crate schemars to 0.8.15 (#183)
• Update Rust crate schemars to 0.8.13 (#181)
• Add Ipv6Network::nth to get the nth address (take two) (#176)
• Added needed traits to NetworkSize (#175)
• Update criterion requirement from 0.4.0 to 0.5.0
• Update katyo/publish-crates action to v2
• Update actions/checkout action to v3
• Update Rust crate schemars to 0.8.12
• Add renovate.json
• Replace assert_eq with assert for bool comparison
• Use cargo clippy --fix to autofix code
• Add a reference where missing
• Cleanup mask for Ipv4Addr
• Shrink the enumerate call on mask
• Cleanup both size functions
• Simplify FromStr for Ipv6Network
• Make parse_prefix more idiomatic
• Update criterion requirement from 0.3.4 to 0.4.0 (#162)
• Update does-it-json requirement from 0.0.3 to 0.0.4 (#161)

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This PR was generated with release-plz.