chore: bump apisix-nginx-module to 1.19.4

[jarvis9443]

Bump apisix-nginx-module from 1.19.3 to 1.19.4.

What's new in 1.19.4

Adds upstream state FFI functions (push_upstream_state / update_upstream_state) that allow Lua code to populate nginx upstream variables (`$upstream_status`, `$upstream_addr`, `$upstream_response_time`, `$upstream_header_time`, `$upstream_connect_time`, `$upstream_response_length`) when the upstream module is bypassed by cosocket-based transports (e.g., ai-proxy plugin).

See: api7/apisix-nginx-module#112

Summary by CodeRabbit

• Chores
  • Updated apisix-nginx-module dependency to version 1.19.4.

[coderabbitai]

📝 Walkthrough

Walkthrough

The build-apisix-runtime.sh script's apisix-nginx-module dependency version is updated from 1.19.3 to 1.19.4, affecting the git branch/tag checkout and module sources during OpenResty configuration.

Changes

Cohort / File(s)	Summary
Dependency Version Update build-apisix-runtime.sh	Pins apisix-nginx-module version to 1.19.4, changing the module checkout and configuration sources during OpenResty build.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Suggested reviewers

• nic-6443

🚥 Pre-merge checks | ✅ 6

✅ Passed checks (6 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'chore: bump apisix-nginx-module to 1.19.4' directly and accurately reflects the main change in the pull request, which is updating the apisix-nginx-module dependency from version 1.19.3 to 1.19.4.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
E2e Test Quality Review	✅ Passed	The E2E Test Quality Review check is not applicable to this pull request as it is a build script maintenance change updating dependency version in build-apisix-runtime.sh, not a test code change.
Security Check	✅ Passed	PR modifies only build-apisix-runtime.sh line 27, changing apisix_nginx_module_ver from 1.19.3 to 1.19.4. No security vulnerabilities found across all seven security categories: no sensitive data exposure, no unencrypted secrets, no authorization bypass, no resource access issues, no cryptographic configuration errors, no resource isolation conflicts, and no improper secret references.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch nic/bump-nginx-module-1.19.4

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[Copilot]

Pull request overview

Updates the APISIX runtime build script to use the newer apisix-nginx-module release, aligning the runtime build with upstream 1.19.4 features (notably the upstream state FFI functions mentioned in the PR description).

Changes:

• Bump apisix_nginx_module_ver from 1.19.3 to 1.19.4 in the runtime build script.

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@build-apisix-runtime.sh`:
- Line 27: Two build scripts diverge on the apisix-nginx-module version: the
variable apisix_nginx_module_ver in build-apisix-runtime.sh is set to "1.19.4"
while build-apisix-base.sh pins "1.18.0", which will produce different binaries;
decide whether the version split is intentional and either (a) synchronize both
scripts to the same version by updating the apisix_nginx_module_ver value in one
script to match the other, or (b) if the divergence is intentional (e.g.,
separate release tracks), add an explicit comment next to
apisix_nginx_module_ver in both build-apisix-runtime.sh and build-apisix-base.sh
explaining the reason and linking to the relevant release policy or issue number
for future maintainers.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: d00678df-5992-41e3-b5ff-bb7303b96ace

📥 Commits

Reviewing files that changed from the base of the PR and between df1e411 and b89b77f.

📒 Files selected for processing (1)

• build-apisix-runtime.sh