fix: make sentry dep optional

crates/core/result/Cargo.toml

@@ -15,6 +15,7 @@ utoipa = ["dep:utoipa"]
 rocket = ["dep:rocket", "dep:serde_json"]
 axum = ["dep:axum", "dep:serde_json"]
 okapi = ["dep:revolt_rocket_okapi", "dep:revolt_okapi", "schemas"]
+sentry = ["dep:sentry"]
 
 default = ["serde"]
 
@@ -36,4 +37,4 @@ revolt_okapi = { version = "0.9.1", optional = true }
 axum = { version = "0.7.5", optional = true }
 
 # Sentry
-sentry = "0.31.5"
+sentry = { version = "0.31.5", optional = true }