chore: bump golang version to 1.23.8

[chlins]

This pull request primarily updates the Go version from 1.23.0 to 1.23.8 across various Dockerfiles and the go.mod file. This change ensures that the project uses the latest patch version of Go, which includes important bug fixes and security updates.

Key changes include:

• Dockerfiles:

  • Updated the Go version to 1.23.8 in build/images/base/Dockerfile.
  • Updated the Go version to 1.23.8 in build/images/dfdaemon/Dockerfile.
  • Updated the Go version to 1.23.8 in build/images/manager/Dockerfile.
  • Updated the Go version to 1.23.8 in build/images/scheduler/Dockerfile.
  • Updated the Go version to 1.23.8 in build/plugin-builder/Dockerfile.
  • Updated the Go version to 1.23.8 in test/tools/no-content-length/Dockerfile.

• Configuration files:

  • Updated the Go version to 1.23.8 in go.mod.
  • Updated the build image to use Go 1.23.8 in hack/build.sh.

Description

Related Issue

Motivation and Context

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.

[Liam-Zhao]

LGTM

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 34.52%. Comparing base (8d2d672) to head (fa64268).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3960      +/-   ##
==========================================
- Coverage   34.54%   34.52%   -0.03%     
==========================================
  Files         339      339              
  Lines       39944    39944              
==========================================
- Hits        13800    13789      -11     
- Misses      25241    25249       +8     
- Partials      903      906       +3     

Flag	Coverage Δ
unittests	34.52% <ø> (-0.03%)	⬇️

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see 3 files with indirect coverage changes

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[gaius-qi]

LGTM