fix: scanning filter not working properly due to version sorting

[ericzzzzzzz]

Description

• the script was using wrong flag for sort versions , this causes vul monitor misreporting, e.g. it's supposed to scan v2.0.10 instead of v2.0.9,
• We should use -V flag to compare version directly instead of comparing numeric values with -n flag.

[codecov]

Codecov Report

Merging #8727 (2044130) into main (290280e) will decrease coverage by 6.08%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##             main    #8727      +/-   ##
==========================================
- Coverage   70.48%   64.41%   -6.08%     
==========================================
  Files         515      617     +102     
  Lines       23150    31180    +8030     
==========================================
+ Hits        16317    20084    +3767     
- Misses       5776     9592    +3816     
- Partials     1057     1504     +447     

Impacted Files	Coverage Δ
cmd/skaffold/app/cmd/completion.go	13.04% <0.00%> (-1.25%)	⬇️
cmd/skaffold/app/cmd/config/list.go	65.21% <ø> (ø)
cmd/skaffold/app/cmd/config/set.go	88.72% <ø> (ø)
cmd/skaffold/app/cmd/config/util.go	54.28% <ø> (ø)
cmd/skaffold/app/cmd/credits.go	100.00% <ø> (ø)
cmd/skaffold/app/cmd/credits/export.go	0.00% <0.00%> (ø)
cmd/skaffold/app/cmd/deploy.go	40.90% <0.00%> (-12.94%)	⬇️
cmd/skaffold/app/cmd/generate_pipeline.go	60.00% <ø> (ø)
cmd/skaffold/app/cmd/inspect_modules.go	65.00% <ø> (ø)
cmd/skaffold/app/cmd/inspect_profiles.go	66.66% <ø> (ø)
... and 40 more

... and 406 files with indirect coverage changes

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[aaron-prindle]

LGTM!