Update dependabot config

[martincostello]

Ignore some further updates from dependabot.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.39%. Comparing base (dd7f4b9) to head (8749ae6).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2392   +/-   ##
=======================================
  Coverage   85.39%   85.39%           
=======================================
  Files         312      312           
  Lines        7464     7464           
  Branches     1121     1121           
=======================================
  Hits         6374     6374           
  Misses        745      745           
  Partials      345      345           

Flag	Coverage Δ
linux	85.36% <ø> (ø)
macos	85.36% <ø> (-0.03%)	⬇️
windows	85.36% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.