fix(controllers): reconcile on annotation update

[corrieriluca]

Breaking changes

• All controllers: reconcile when annotations change
  • Previously the update predicate was ignoring all changes applied to a resource apart from its spec.
  • Burrito relying heavily on annotations to trigger changes on its resources, I find it useful to reconcile upon annotation changes.
  • ⚠️ Note that this can have unintended side-effect. I made that change initially for triggering a re-sync on layers when their LastRelevantCommit changes (e.g. when a Push event is received by the Webhook).

[codecov-commenter]

Codecov Report

Merging #188 (5e45650) into main (983ad07) will decrease coverage by 0.51%.
The diff coverage is 0.00%.

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@@            Coverage Diff             @@
##             main     #188      +/-   ##
==========================================
- Coverage   68.93%   68.43%   -0.51%     
==========================================
  Files          28       28              
  Lines        2025     2040      +15     
==========================================
  Hits         1396     1396              
- Misses        545      560      +15     
  Partials       84       84              

Files	Coverage Δ
internal/controllers/terraformlayer/controller.go	35.52% <0.00%> (-2.51%)	⬇️
...nal/controllers/terraformpullrequest/controller.go	32.35% <0.00%> (-2.57%)	⬇️
internal/controllers/terraformrun/controller.go	59.61% <0.00%> (-3.02%)	⬇️

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