[BUG] [Rust Server] Rust Server generated code HTTPS/SSL not work.

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• What's the version of OpenAPI Generator used?
• Have you search for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Bounty to sponsor the fix (example)

Description

On the example project openapi-v3,

1. One Shell run "cargo run --example server -- --https "
2. Another Shell run "cargo run --example client -- --https UuidGet"
   Fail with the following error:
   Err(ApiError("No response received: The OpenSSL library reported an error: error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed:s3_clnt.c:1264:")) (X-Span-ID: XSpanIdString("4f9b1d61-d15e-453c-a7f3-7e4679213549"))

openapi-generator version

5.0.x and master both fail

OpenAPI declaration file content or url

example openapi-v3.yaml

Command line used for generation

One Shell run "cargo run --example server -- --https "
Another Shell run "cargo run --example client -- --https UuidGet"

Steps to reproduce

On the example project openapi-v3,
1.One Shell run "cargo run --example server -- --https "
2. Another Shell run "cargo run --example client -- --https UuidGet"
Fail with the following error:
Err(ApiError("No response received: The OpenSSL library reported an error: error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed:s3_clnt.c:1264:")) (X-Span-ID: XSpanIdString("4f9b1d61-d15e-453c-a7f3-7e4679213549"))

Related issues/PRs

Suggest a fix

After replace the ca.pem/server-chain.pem/server-key.pem to new self signed CA, it works.
Can someone update the pem in the code.