[Snyk] Security upgrade golang from 1.21rc3-alpine to 1.21.2-alpine

[wubin1989]

This PR was automatically created by Snyk using the credentials of a real user.

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Changes included in this PR

• cmd/testdata/testsvc/Dockerfile

We recommend upgrading to golang:1.21.2-alpine, as this image has only 0 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Some of the most important vulnerabilities in your base image include:

Severity	Priority Score / 1000	Issue	Exploit Maturity
	714	Out-of-bounds Write SNYK-ALPINE318-BUSYBOX-5890990	No Known Exploit
	714	Out-of-bounds Write SNYK-ALPINE318-BUSYBOX-5890990	No Known Exploit
	714	Out-of-bounds Write SNYK-ALPINE318-BUSYBOX-5890990	No Known Exploit
	514	Improper Authentication SNYK-ALPINE318-OPENSSL-5776808	No Known Exploit
	514	Inefficient Regular Expression Complexity SNYK-ALPINE318-OPENSSL-5788370	No Known Exploit

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[codecov]

Codecov Report

Merging #174 (429b378) into main (41ef70f) will decrease coverage by 0.05%.
The diff coverage is n/a.

❗ Current head 429b378 differs from pull request most recent head be38d8a. Consider uploading reports for the commit be38d8a to get more accurate results

@@            Coverage Diff             @@
##             main     #174      +/-   ##
==========================================
- Coverage   48.99%   48.95%   -0.05%     
==========================================
  Files         112      112              
  Lines       12111    12111              
==========================================
- Hits         5934     5929       -5     
- Misses       5779     5789      +10     
+ Partials      398      393       -5     

see 2 files with indirect coverage changes

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