Bump rss-parser from 3.9.0 to 3.12.0
Bump rss-parser from 3.9.0 to 3.12.0

Bumps [rss-parser](https://github.com/bobby-brennan/rss-parser) from 3.9.0 to 3.12.0.
- [Release notes](https://github.com/bobby-brennan/rss-parser/releases)
- [Commits](https://github.com/bobby-brennan/rss-parser/compare/v3.9.0...v3.12.0)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
schul-cloud/schulcloud-server,schul-cloud/schulcloud-server,schul-cloud/schulcloud-server