fix(deps): update rust crate open-feature to v0.3.0

Author: renovate[bot]

Cargo.toml

@@ -36,7 +36,7 @@ tracing = "0.1"
 thiserror = "2.0"
 
 # OpenFeature SDK
-open-feature = "0.2"
+open-feature = "0.3"
 
 # Async runtime
 async-trait = "0.1"

crates/env-var/Cargo.toml

@@ -14,7 +14,7 @@ keywords = ["open-feature", "feature-flag", "environment-variable"]
 maintenance = { status = "actively-developed" }
 
 [dependencies]
-open-feature = "0.2.7"
+open-feature = "0.3.0"
 async-trait = "0.1.89"
 
 [dev-dependencies]

crates/flagsmith/Cargo.toml

@@ -13,7 +13,7 @@ keywords = ["openfeature", "feature-flags", "flagsmith"]
 
 [dependencies]
 # OpenFeature SDK
-open-feature = "0.2"
+open-feature = "0.3"
 
 # Flagsmith SDK
 flagsmith = "2.1"

crates/flipt/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2024"
 
 [dependencies]
 flipt = "=1.1.1"
-open-feature = "0.2.7"
+open-feature = "0.3.0"
 serde_json = "1.0"
 # FIXME: openfeature-rust-sdk-contrib should export this
 async-trait = "0.1"

crates/ofrep/Cargo.toml

@@ -16,7 +16,7 @@ serial_test = "3.2.0"
 
 [dependencies]
 async-trait = "0.1.89"
-open-feature = "0.2.7"
+open-feature = "0.3.0"
 reqwest = { version = "0.12", default-features = false, features = [
   "json",
   "stream",