Update rss dependency

[Turbo87]

This update fixes the escaping of ]]> in CDATA, which means we can remove our current workaround :)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.44%. Comparing base (df815d7) to head (f5acbaf).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #10046   +/-   ##
=======================================
  Coverage   89.44%   89.44%           
=======================================
  Files         295      295           
  Lines       31475    31467    -8     
=======================================
- Hits        28154    28147    -7     
+ Misses       3321     3320    -1     

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