test: use ip address instead of localhost

[xepozz]

What was changed

Changed localhost to 127.0.0.1

Why?

DNS resolving isn't a thing we want to have during tests. Also, sometimes it stuck for some reasons and tests fail because of it.

Checklist

1. Closes

2. How was this tested:

3. Any docs updates needed?

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
php	Ready	Preview, Comment	Feb 22, 2026 0:25am

[semgrep-managed-scans]

Semgrep found 1 missing-explicit-permissions finding:

• .github/workflows/run-test-suite.yml
  • L43-103 - Triage

No explicit GITHUB_TOKEN permissions found at the workflow or job level. Add a permissions: block at the workflow root (applies to all jobs) or per job with least privilege (e.g., contents: read and only specific writes like pull-requests: write if needed).