Automated cherry pick of #4376: bump alpine to 3.18.5 to address CVE concerns

[zhzhuang-zju]

Cherry pick of #4376 on release-1.7.
#4376: bump alpine to 3.18.5 to address CVE concerns
For details on the cherry pick process, see the cherry pick requests page.

`release1.7`: The base image `alpine` now has been promoted from `alpine:3.18.3` to `alpine:3.18.5`

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (a37961c) 53.89% compared to head (e000ad8) 53.89%.

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Additional details and impacted files

@@             Coverage Diff              @@
##           release-1.7    #4380   +/-   ##
============================================
  Coverage        53.89%   53.89%           
============================================
  Files              231      231           
  Lines            22951    22951           
============================================
  Hits             12370    12370           
  Misses            9913     9913           
  Partials           668      668           

Flag	Coverage Δ
unittests	53.89% <100.00%> (ø)

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[RainbowMango]

/lgtm
/approve

[karmada-bot]

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