chore(deps): update docker.io/library/alpine docker tag to v3.18.2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
docker.io/library/alpine	final	patch	3.18.0 -> 3.18.2

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[codecov-commenter]

Codecov Report

Merging #133 (aeefbfc) into main (2fe1ddc) will decrease coverage by 0.29%.
The diff coverage is 15.78%.

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@@            Coverage Diff             @@
##             main     #133      +/-   ##
==========================================
- Coverage   45.08%   44.80%   -0.29%     
==========================================
  Files          23       23              
  Lines        1546     1558      +12     
==========================================
+ Hits          697      698       +1     
- Misses        822      833      +11     
  Partials       27       27              

Impacted Files	Coverage Δ
internal/controllers/manager.go	6.25% <0.00%> (-0.10%)	⬇️
internal/controllers/terraformpullrequest/layer.go	0.00% <0.00%> (ø)
internal/controllers/terraformlayer/pod.go	100.00% <100.00%> (ø)

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