update go.mod: go from 1.23.1 to 1.23.4

[WindzCUHK]

Description

introduce bugfix in go 1.23.3

• https://go-review.googlesource.com/c/go/+/621856
• https://go-review.googlesource.com/c/go/+/620137

Type of change

• Bug fix
• New feature
• Refactoring (no functional changes, no api changes)
• Non-code changes (update documentation, pipeline, etc.)

Flags

• Breaks backward compatibility
• Requires a documentation update
• Has untestable code

Related issue/PR

• Closes Bump golang.org/x/crypto from 0.14.0 to 0.17.0 #11
• Closes Bump github.com/lestrrat-go/jwx from 1.2.26 to 1.2.29 #15

---

Checklist

• Followed the guidelines in the CONTRIBUTING document
• Added prefix [skip ci]/[ci skip]/[no ci]/[skip actions]/[actions skip] in the PR title if necessary
• Tested and linted the code
• Commented the code
• Made corresponding changes to the documentation
• Passed all pipeline checking

Checklist for maintainer

• Use Squash and merge
• Double-confirm the merge message has prefix [skip ci]/[ci skip]/[no ci]/[skip actions]/[actions skip]
• Delete the branch after merge