fix: Stringify gen_ai.tool.input attribute

[alexander-alderman-webb]

Description

Issues

Reminders

• Please add tests to validate your changes, and lint your code using tox -e linters.
• Add GH Issue ID & Linear ID (if applicable)
• PR title should use conventional commit style (feat:, fix:, ref:, meta:)
• For external contributors: CONTRIBUTING.md, Sentry SDK development docs, Discord community

[github-actions]

Semver Impact of This PR

🟢 Patch (bug fixes)

📋 Changelog Preview

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Entries from this PR are highlighted with a left border (blockquote style).

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New Features ✨

• (ci) Cancel in-progress PR workflows on new commit push by joshuarli in #5994

Bug Fixes 🐛

• (google_genai) Redact binary data in inline_data and fix multi-part message extraction by ericapisani in #5977
• (profiler) Stop nulling buffer on teardown by ericapisani in #6075

• Stringify gen_ai.tool.input attribute by alexander-alderman-webb in #6087

• Stringify gen_ai.tool.output attribute by alexander-alderman-webb in #6086

Internal Changes 🔧

• (pydantic-ai) Remove dead Model.request patch by alexander-alderman-webb in #5956
• Set explicit base-branch for codecov action by ericapisani in #5992

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Codecov Results 📊

✅ 79 passed | Total: 79 | Pass Rate: 100% | Execution Time: 871ms

📊 Comparison with Base Branch

Metric	Change
Total Tests	—
Passed Tests	—
Failed Tests	—
Skipped Tests	—

✨ No test changes detected

All tests are passing successfully.

❌ Patch coverage is 0.00%. Project has 14935 uncovered lines.
✅ Project coverage is 30.07%. Comparing base (base) to head (head).

Files with missing lines (2)

File	Patch %	Lines
utils.py	20.59%	⚠️ 81 Missing
execute_tool.py	36.00%	⚠️ 16 Missing

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    30.05%    30.07%    +0.02%
==========================================
  Files          190       190         —
  Lines        21365     21357        -8
  Branches      7068      7066        -2
==========================================
+ Hits          6420      6422        +2
- Misses       14945     14935       -10
- Partials       552       552         —

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