[DT-824] Return 400 for invalid byte sequence

[fboulnois]

Addresses

https://broadworkbench.atlassian.net/browse/DT-824

Summary

• A wait strategy was added for alternate container runtimes like colima, which take longer to bind the testcontainer database port. This caused tests to crash.
• A null character (\0) anywhere in a UTF-8 string is a valid UTF-8 byte sequence, however Postgres rejects these null characters in UTF-8 strings, likely because Postgres uses null-terminated strings internally ("C-style" strings) and these can cause security issues. The error is changed such that if an invalid byte sequence is detected it returns a 400 instead.
• Tests are added to assert that invalid names throw an error.

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[rushtong]

Nice work 👍🏽