AVRO-3846: [Rust] Fix race condition among serde tests

[sarutak]

AVRO-3846

What is the purpose of the change

This PR fixes an issue that race condition happens among serde tests named avro_3747*.

Sometimes one of tests named avro_3747* fails.
You can easily reproduce this issue frequently with cargo test like as follows.

$ cargo test avro_3747

The reason is that these tests run concurrently and save/load the same atomic variable.
So this PR introduces serial_test crate and make these tests run in serial.

Verifying this change

Confirmed tests named avro_3747* don't fail.

Documentation

• Does this pull request introduce a new feature? (no)

[martin-g]

Thanks, @sarutak !
I haven't faced this problem until now but knowing how it works I understand that it is a real issue!

How about using serial_file(key, "some/path") instead ? By using _file we can group such related tests. Later if we need to have more serial tests we won't need to lock on unrelated problems.

[sarutak]

Thank you for the comment @martin-g !
I agree that it's better to group related tests.
How about using serial attribute like serial(avro_3747) for such purpose rather than file_serial?
https://docs.rs/serial_test/latest/serial_test/attr.serial.html

[martin-g]

Thank you, @sarutak !