refactor: controller-runtime v0.16.3

[KevFan]

Kuadrant Opeator has moved to controller runtime v0.16.3 as part of Kuadrant/kuadrant-operator#237, so just doing the same for limitador operator

[codecov-commenter]

Codecov Report

Merging #111 (88f0122) into main (c172d5f) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #111   +/-   ##
=======================================
  Coverage   68.80%   68.80%           
=======================================
  Files          14       14           
  Lines         984      984           
=======================================
  Hits          677      677           
  Misses        267      267           
  Partials       40       40           

Flag	Coverage Δ
integration	66.06% <ø> (ø)
unit	70.19% <ø> (ø)

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Components	Coverage Δ
api/v1alpha1 (u)	100.00% <ø> (ø)
pkg/helpers (u)	∅ <ø> (∅)
pkg/log (u)	31.81% <ø> (ø)
pkg/reconcilers (u)	44.19% <ø> (ø)
pkg/limitador (u)	88.46% <ø> (ø)
controllers (i)	66.06% <ø> (ø)