Adding ordering cost, upgrade jose signature packages

[samlown]

• Bill Ordering Cost added for greater EN16931 compliance.
• Upgrading jose signature packages which we all quite old.

Pre-Review Checklist

• I have performed a self-review of my code.
• I have added thorough tests with at least 90% code coverage.
• I've modified or created example GOBL documents to show my changes in use, if appropriate.
• When adding or modifying a tax regime or addon, I've added links to the source of the changes, either structured or in the comments.
• I've run go generate . to ensure that the Schemas and Regime data are up to date.
• All linter warnings have been reviewed and fixed.
• I've been obsessive with pointer nil checks to avoid panics.
• The CHANGELOG.md has been updated with an overview of my changes.
• Requested a review from @samlown.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.14%. Comparing base (a24e7fa) to head (7122966).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #502   +/-   ##
=======================================
  Coverage   88.14%   88.14%           
=======================================
  Files         270      270           
  Lines       13995    13997    +2     
=======================================
+ Hits        12336    12338    +2     
  Misses       1320     1320           
  Partials      339      339           

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