⬆️ Bump treelite-runtime from 3.2.0 to 3.4.0 in /testdata

Bumps [treelite-runtime](https://github.com/dmlc/treelite) from 3.2.0 to 3.4.0.
- [Release notes](https://github.com/dmlc/treelite/releases)
- [Changelog](https://github.com/dmlc/treelite/blob/mainline/NEWS.md)
- [Commits](dmlc/treelite@3.2.0...3.4.0)

---
updated-dependencies:
- dependency-name: treelite-runtime
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

testdata/requirements.txt

@@ -1,5 +1,5 @@
 xgboost==1.7.5
 scikit-learn==1.2.2
 treelite==3.2.0
-treelite-runtime==3.2.0
+treelite-runtime==3.4.0
 pandas==2.0.1