Bump the production-dependencies group with 3 updates

Bumps the production-dependencies group with 3 updates: [@mui/icons-material](https://github.com/mui/material-ui/tree/HEAD/packages/mui-icons-material), [@mui/material](https://github.com/mui/material-ui/tree/HEAD/packages/mui-material) and [@natlibfi/melinda-backend-commons](https://github.com/natlibfi/melinda-backend-commons-js).


Updates `@mui/icons-material` from 5.14.19 to 5.15.1
- [Release notes](https://github.com/mui/material-ui/releases)
- [Changelog](https://github.com/mui/material-ui/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mui/material-ui/commits/v5.15.1/packages/mui-icons-material)

Updates `@mui/material` from 5.14.19 to 5.15.1
- [Release notes](https://github.com/mui/material-ui/releases)
- [Changelog](https://github.com/mui/material-ui/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mui/material-ui/commits/v5.15.1/packages/mui-material)

Updates `@natlibfi/melinda-backend-commons` from 2.2.3 to 2.2.4
- [Release notes](https://github.com/natlibfi/melinda-backend-commons-js/releases)
- [Commits](NatLibFi/melinda-backend-commons-js@v2.2.3...v2.2.4)

---
updated-dependencies:
- dependency-name: "@mui/icons-material"
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
- dependency-name: "@mui/material"
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: production-dependencies
- dependency-name: "@natlibfi/melinda-backend-commons"
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>