purge cloudflare on deploy

[artoonie]

Only on deployments, which include settings/env var changes, but not on restarts or scaling.

Note: this means we will need to be careful about not deploying during heavy load times unless absolutely necessary.

[codecov]

Codecov Report

❌ Patch coverage is 97.29730% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 96.23%. Comparing base (c842c44) to head (422d908).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
common/cloudflare.py	90.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #662   +/-   ##
=======================================
  Coverage   96.22%   96.23%           
=======================================
  Files         133      134    +1     
  Lines        6550     6585   +35     
=======================================
+ Hits         6303     6337   +34     
- Misses        247      248    +1     

Files with missing lines	Coverage Δ
visualizer/management/commands/purgeCloudflare.py	100.00% <100.00%> (ø)
visualizer/tests/testSimple.py	100.00% <100.00%> (ø)
common/cloudflare.py	95.83% <90.00%> (-1.67%)	⬇️

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