Update dependency com.rometools:rome to v2

This MR contains the following updates:

Package	Type	Update	Change
com.rometools:rome (source)	compile	major	1.19.0 -> 2.0.0

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Release Notes

rometools/rome

v2.0.0

Compare Source

What's Changed

🔥 Breaking Changes

• Switch from Java 6 to Java 11 (#​615)
• Remove deprecated modules (#​614)
• Support parsing of URLs with spaces (#​616)
• Enhance price handling for Media RSS (#​617)

⭐ New Features

• Add support for self links (#​618)

🐞 Bug Fixes

• Fix sunset attribute in Yahoo weather module (#​621)
• Prevent OPML20Generator from creating empty <docs /> element (#​619)
• Allow zero lengths for enclosures (#​625)

🧹 Cleanup

• Polish ContentItemTest (#​620)
• Remove unused dependencies (#​626)

✔ Other Changes

• Bump actions/checkout from 2.4.0 to 3.3.0 by @​dependabot in (#​624)
• Bump maven-compiler-plugin from 3.8.1 to 3.10.1 by @​dependabot in (#​623)
• Deprecate URL support in XmlReader (#​627)

Full Changelog: https://github.com/rometools/rome/compare/1.19.0...2.0.0

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