Pin Mashumaro to keep aligned with dbt core depedencies

[VersusFacit]

Per dbt-labs/dbt-core@407f6caa1c70a8ba3d8fdbddb5edb4c7afed35bc\#diff-7c83d4c4b82698e2b510b737d%5C%5B%E2%80%A6%5C%5D5b0c1e3c0cb3353460e73bcae29R54

Problem

Mashumaro 3.15 broke core builds. dbt-labs/dbt-core#11046

We need to mirror that dependency resolution.

Solution

Pin using Core's standard.

Checklist

• I have read the contributing guide and understand what's expected of me
• I have run this code in development, and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• This PR has no interface changes (e.g. macros, cli, logs, json artifacts, config files, adapter interface, etc.) or this PR has already received feedback and approval from Product or DX

[mikealfare]

CLA-bot is currently not working. The author is a dbt Labs employee, therefore they have signed the CLA. Merging with manual confirmation.