Bump xml2js and rss-parser

Bumps [xml2js](https://github.com/Leonidas-from-XIV/node-xml2js) and [rss-parser](https://github.com/bobby-brennan/rss-parser). These dependencies needed to be updated together.

Updates `xml2js` from 0.4.23 to 0.5.0
- [Commits](https://github.com/Leonidas-from-XIV/node-xml2js/commits/0.5.0)

Updates `rss-parser` from 3.12.0 to 3.13.0
- [Commits](rbren/rss-parser@v3.12.0...v3.13.0)

---
updated-dependencies:
- dependency-name: xml2js
  dependency-type: indirect
- dependency-name: rss-parser
  dependency-type: indirect
...

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