fix(load-balancer): wait for action of managed certificate

[apricote]

The action from creating the managed certificate was not awaited, which could cause issues where the creation fails, but this is not reported back on the Service. We now await the action and report its status back to the controller.

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 68.36%. Comparing base (f66b1ce) to head (4902825).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/hcops/certificates.go	50.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1144      +/-   ##
==========================================
- Coverage   68.40%   68.36%   -0.05%     
==========================================
  Files          23       23              
  Lines        2624     2627       +3     
==========================================
+ Hits         1795     1796       +1     
- Misses        655      656       +1     
- Partials      174      175       +1     

Flag	Coverage Δ
e2e	44.01% <50.00%> (-0.02%)	⬇️
unit	64.75% <66.66%> (-0.04%)	⬇️

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