build(deps): update bech32 requirement from 0.8.1 to 0.9.0 (#104)

Updates the requirements on [bech32](https://github.com/rust-bitcoin/rust-bech32) to permit the latest version.
- [Release notes](https://github.com/rust-bitcoin/rust-bech32/releases)
- [Commits](https://github.com/rust-bitcoin/rust-bech32/commits)

---
updated-dependencies:
- dependency-name: bech32
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pallas-primitives/Cargo.toml

@@ -19,7 +19,7 @@ log = "0.4.14"
 pallas-crypto = { version = "0.11.0-alpha.0", path = "../pallas-crypto" }
 pallas-codec = { version = "0.11.0-alpha.0", path = "../pallas-codec" }
 base58 = "0.2.0"
-bech32 = "0.8.1"
+bech32 = "0.9.0"
 serde = { version ="1.0.136", optional = true }
 serde_json = { version ="1.0.79", optional = true }