chore(deps): bump strands-agents in /e2e_tests/python (#1315)

Bumps [strands-agents](https://github.com/strands-agents/sdk-python) from 1.35.0 to 1.38.0.
- [Release notes](https://github.com/strands-agents/sdk-python/releases)
- [Commits](strands-agents/sdk-python@v1.35.0...v1.38.0)

---
updated-dependencies:
- dependency-name: strands-agents
  dependency-version: 1.38.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

e2e_tests/python/requirements.txt

@@ -1,4 +1,4 @@
-strands-agents==1.35.0
+strands-agents==1.38.0
 strands-agents-evals==0.1.14
 mcp==1.26.0
 aiohttp>=3.13.4