`serde::__private::de::Content::deserialize` not found in `Content<'_>` in `serde_derive` v1.0.224

[ysaito1001]

After upgrading serde_derive to v1.0.224, our CI has started failing to compile the lambda_http v0.8.3

error[E0599]: no variant or associated item named `deserialize` found for enum `serde_core::__private::content::Content` in the current scope
  --> /opt/cargo/registry/src/index.crates.io-1949cf8c6b5b557f/lambda_http-0.8.3/src/deserializer.rs:11:60
   |
11 |         let content = match serde::__private::de::Content::deserialize(deserializer) {
   |                                                            ^^^^^^^^^^^ variant or associated item not found in `Content<'_>`

Pinning serde_derive to exactly =v1.0.219 helps work around the issue.

[oli-obk]

This is intentional. Please do not use API documented to disappear or break at any time