Update hex requirement from 0.3 to 0.4
authordependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Tue, 18 Jan 2022 22:05:49 +0000 (22:05 +0000)
committerGitHub <noreply@github.com>
Tue, 18 Jan 2022 22:05:49 +0000 (22:05 +0000)
commitf39fa69b680066c1dc7e74adaef1685c8fce756f
treedb2e164c9a4efd6274dfc28716a73b94e85e0a32
parent10204f706f6779e5640a2f0688a3692d09db883e
Update hex requirement from 0.3 to 0.4

Updates the requirements on [hex](https://github.com/KokaKiwi/rust-hex) to permit the latest version.
- [Release notes](https://github.com/KokaKiwi/rust-hex/releases)
- [Commits](https://github.com/KokaKiwi/rust-hex/compare/v0.3...v0.4.3)

---
updated-dependencies:
- dependency-name: hex
  dependency-type: direct:production
...

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lightning-invoice/Cargo.toml
lightning/Cargo.toml