build(deps): update fluent-uri requirement from 0.2 to 0.3

Updates the requirements on [fluent-uri](https://github.com/yescallop/fluent-uri-rs) to permit the latest version.
- [Release notes](https://github.com/yescallop/fluent-uri-rs/releases)
- [Commits](yescallop/fluent-uri-rs@v0.2.0...v0.3.1)

---
updated-dependencies:
- dependency-name: fluent-uri
  dependency-type: direct:production
...

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

cdevents-sdk/Cargo.toml

@@ -12,7 +12,7 @@ readme = "README.md"
 
 [dependencies]
 cloudevents-sdk = { version = "0.7", optional = true, default-features = false }
-fluent-uri = "0.2"
+fluent-uri = "0.3"
 proptest = { version = "1.4", optional = true }
 proptest-derive = { version = "0.5", optional = true }
 serde = { version = "1.0", features = ["derive"] }