Bump mashumaro from 3.14 to 3.15 (skodaconnect#242)

Bumps [mashumaro](https://github.com/Fatal1ty/mashumaro) from 3.14 to 3.15.
- [Release notes](https://github.com/Fatal1ty/mashumaro/releases)
- [Commits](Fatal1ty/mashumaro@v3.14...v3.15)

---
updated-dependencies:
- dependency-name: mashumaro
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>