[Rust] Upgrade reqwest-middleware to 0.5 for reqwest 0.13 compatibility

The previous reqwest-middleware 0.4 depends on reqwest 0.12, which caused
type conflicts when upgrading to reqwest 0.13:
- reqwest::Error (from reqwest 0.13)
- reqwest_middleware::reqwest::Error (from reqwest 0.12 via middleware)

These are different types from different versions of reqwest.

reqwest-middleware 0.5 is compatible with reqwest 0.13, resolving the
version conflict. With both using the same reqwest version, the re-exported
types are now correctly aligned.

Author: emilbonnek

modules/openapi-generator/src/main/resources/rust/Cargo.mustache

@@ -68,7 +68,7 @@ secrecy = "0.8.0"
 {{^supportAsync}}
 reqwest = { version = "^0.13", default-features = false, features = ["json", "blocking", "multipart", "query", "form"] }
 {{#supportMiddleware}}
-reqwest-middleware = { version = "^0.4", features = ["json", "multipart"] }
+reqwest-middleware = { version = "^0.5", features = ["json", "multipart"] }
 {{/supportMiddleware}}
 {{/supportAsync}}
 {{#supportAsync}}
@@ -81,7 +81,7 @@ reqwest = { version = "^0.13", default-features = false, features = ["json", "mu
 reqwest = { version = "^0.13", default-features = false, features = ["json", "multipart", "query", "form"] }
 {{/useAsyncFileStream}}
 {{#supportMiddleware}}
-reqwest-middleware = { version = "^0.4", features = ["json", "multipart"] }
+reqwest-middleware = { version = "^0.5", features = ["json", "multipart"] }
 {{/supportMiddleware}}
 {{#supportTokenSource}}
 async-trait = "^0.1"
@@ -99,7 +99,7 @@ rustls = ["reqwest/rustls"]
 async-trait = "^0.1"
 reqwest = { version = "^0.13", default-features = false, features = ["json", "multipart", "stream", "query", "form"] }
 {{#supportMiddleware}}
-reqwest-middleware = { version = "^0.4", features = ["json", "multipart"] }
+reqwest-middleware = { version = "^0.5", features = ["json", "multipart"] }
 {{/supportMiddleware}}
 {{#supportTokenSource}}
 # TODO: propose to Yoshidan to externalize this as non google related crate, so that it can easily be extended for other cloud providers.

samples/client/petstore/rust/reqwest/petstore-async-middleware/Cargo.toml

@@ -16,7 +16,7 @@ uuid = { version = "^1.8", features = ["serde", "v4"] }
 tokio = { version = "^1.46.0", features = ["fs"] }
 tokio-util = { version = "^0.7", features = ["codec"] }
 reqwest = { version = "^0.13", default-features = false, features = ["json", "multipart", "stream", "query", "form"] }
-reqwest-middleware = { version = "^0.4", features = ["json", "multipart"] }
+reqwest-middleware = { version = "^0.5", features = ["json", "multipart"] }
 
 [features]
 default = ["native-tls"]