chore: update release build script to support internal scanning

[ericzzzzzzz]

Fixes: #7169
Related: Need to do the same for v1.39, v2.0, v2.3,

Description

• bug filing works as expected. b/285167256
• Add another tag in release process for vulnerabilities scanning
• the tag used for scanning marker purposed is in minor version level, which means for only one patch release(the latest one) within the same minor version will possesses the tag. For example, if 1.39.10 is the latest patch release for v1.39 version, the corresponding lts image will have the public-image-v1.39-lts tag, if we release a new patch version for v1.39 later, the tag will be moved to the corresponding 1.39.11 lts image.

[codecov]

Codecov Report

Merging #8834 (84f12b5) into main (290280e) will decrease coverage by 6.54%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##             main    #8834      +/-   ##
==========================================
- Coverage   70.48%   63.94%   -6.54%     
==========================================
  Files         515      620     +105     
  Lines       23150    31455    +8305     
==========================================
+ Hits        16317    20115    +3798     
- Misses       5776     9836    +4060     
- 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 410 files with indirect coverage changes

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[plumpy]

I don't think $_SCANNING_MARKER is defined anywhere?

[ericzzzzzzz]

It can be defined in cloud build trigger, i just did it thanks!