Disabling cache in the setup-go steps of CI/CD

[ytimocin]

Description

Disabling cache in the setup-go steps of our CI/CD pipelines.

Ref: actions/setup-go#403 (comment)

Type of change

• This pull request fixes a bug in Radius and has an approved issue (issue link required).
  Fixes: Run actions/cache@v4 step in functional tests spams thousands of log lines #7790

Contributor checklist

Please verify that the PR meets the following requirements, where applicable:

• An overview of proposed schema changes is included in a linked GitHub issue.
• A design document PR is created in the design-notes repository, if new APIs are being introduced.
• If applicable, design document has been reviewed and approved by Radius maintainers/approvers.
• A PR for the samples repository is created, if existing samples are affected by the changes in this PR.
• A PR for the documentation repository is created, if the changes in this PR affect the documentation or any user facing updates are made.
• A PR for the recipes repository is created, if existing recipes are affected by the changes in this PR.

[github-actions]

Unit Tests

3 555 tests  ±0   3 551 ✅ ±0   5m 32s ⏱️ +6s
  285 suites ±0       4 💤 ±0 
    1 files   ±0       0 ❌ ±0 

Results for commit 76d2fc6. ± Comparison against base commit 6281a2f.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.50%. Comparing base (c4c1c00) to head (76d2fc6).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8147      +/-   ##
==========================================
+ Coverage   59.47%   59.50%   +0.02%     
==========================================
  Files         577      580       +3     
  Lines       38644    39008     +364     
==========================================
+ Hits        22984    23210     +226     
- Misses      13994    14083      +89     
- Partials     1666     1715      +49     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.