refactor: use strings.Builder to improve performance

[stemlaud]

Summary

use strings.Builder to improve performance

Primary Changes:

strings.Builder has fewer memory allocations and better performance.
More info: golang/go#75190

Secondary Changes:

Issue

• No

Type of change

Select one or more from the following:

• New feature, functionality or library
• Bug fix
• Code health or cleanup
• Documentation
• Other (specify)

Sanity Checklist

• I have updated the GitHub Issue Metadata: assignees, reviewers, labels, project, iteration and milestone
• For docs: make docusaurus_start
• For small changes: make go_develop_and_test and make test_e2e
• For major changes: devnet-test-e2e label to run E2E tests in CI
• For migration changes: make test_e2e_oneshot
• 'TODO's, configurations and other docs

[Olshansk]

@stemlaud

1. Testing - You'll need to run make go_docs and update the docs to make sure this still works.
2. Merge with main: Please merge with main and resolve conflicts
3. Description: Please update the PR description
4. I'll approve the workflows after ☝️

[stemlaud]

@stemlaud

1. Testing - You'll need to run make go_docs and update the docs to make sure this still works.
2. Merge with main: Please merge with main and resolve conflicts
3. Description: Please update the PR description
4. I'll approve the workflows after ☝️

Thanks for your help! @Olshansk

I have followed your suggestions and executed these actions. Please review again. 😄