chore: bump engine version

[Noroth]

Correlated engine PR: wundergraph/graphql-go-tools#1631

Summary by CodeRabbit

• Chores
  • Updated the GraphQL tooling version used by router components and related tests.
  • Includes the latest fixes and improvements from the updated tooling release.

Checklist

• I have discussed my proposed changes in an issue and have received approval to proceed.
• I have followed the coding standards of the project.
• Tests or benchmarks have been added or updated.
• If applicable, I have provided instructions for reviewers for manually validating my changes.
• Documentation has been updated on https://github.com/wundergraph/docs-website.
• I have read the Contributors Guide.

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This project follows the principles of the Open Source AI Manifesto. Please ensure your contribution aligns with its principles.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 5bdeabb3-380c-447a-afb8-7cb04a68a4a6

📥 Commits

Reviewing files that changed from the base of the PR and between b5a6bc5 and 2275798.

⛔ Files ignored due to path filters (2)

• router-tests/go.sum is excluded by !**/*.sum
• router/go.sum is excluded by !**/*.sum

📒 Files selected for processing (2)

• router-tests/go.mod
• router/go.mod

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Walkthrough

The router and router-tests Go modules update github.com/wundergraph/graphql-go-tools/v2 to the same v2.15.2-0.20260813081903-fbe43c2d56f5 pseudo-version.

Changes

GraphQL tools dependency alignment

Layer / File(s)	Summary
Module dependency updates router/go.mod, router-tests/go.mod	Both modules update github.com/wundergraph/graphql-go-tools/v2 from v2.15.0 to v2.15.2-0.20260813081903-fbe43c2d56f5.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Mergeability Score: ⚪ Minimal · up to 22757

This PR only updates engine dependency versions in module metadata, and no actionable merge-blocking risk remains beyond normal checks and review.

Possibly related PRs

• wundergraph/cosmo#3112: Updates the same dependency to incorporate scheduler changes.
• wundergraph/cosmo#3077: Updates the same dependency in both module files.
• wundergraph/cosmo#3057: Updates graphql-go-tools/v2 in the same module files.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the dependency version update in the pull request.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

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_{Comment @coderabbitai help to get the list of available commands.}

[github-actions]

❌ Internal Query Planner CI checks failed

The Internal Query Planner CI checks failed in the celestial repository, and this is going to stop the merge of this PR.
If you are part of the WunderGraph organization, you can see the PR with more details.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.52%. Comparing base (70cd61d) to head (2275798).
⚠️ Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3160      +/-   ##
==========================================
+ Coverage   62.40%   62.52%   +0.12%     
==========================================
  Files         263      263              
  Lines       31048    31060      +12     
==========================================
+ Hits        19375    19420      +45     
+ Misses      10163    10122      -41     
- Partials     1510     1518       +8     

see 4 files with indirect coverage changes

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