chore(deps): Bump pytest from 9.0.3 to 9.1.1 in /tests

Bumps [pytest](https://github.com/pytest-dev/pytest) from 9.0.3 to 9.1.1.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@9.0.3...9.1.1)

---
updated-dependencies:
- dependency-name: pytest
  dependency-version: 9.1.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

tests/requirements.colab.2024.02.txt

@@ -22,7 +22,7 @@ numpy==2.4.6
 openpyxl == 3.1.5
 pandas==3.0.3
 pandas-datareader == 0.10.0
-pytest == 9.0.3
+pytest == 9.1.1
 pytest-xdist
 requests == 2.34.2
 scikit-learn == 1.9.0

tests/requirements.colab.2025.02.txt

@@ -24,7 +24,7 @@ numpy==2.4.6
 openpyxl == 3.1.5
 pandas==3.0.3
 pandas-datareader == 0.10.0
-pytest == 9.0.3
+pytest == 9.1.1
 pytest-xdist
 requests == 2.34.2
 scikit-learn == 1.9.0

tests/requirements.colab.2026.02.txt

@@ -24,7 +24,7 @@ numpy==2.4.6
 openpyxl==3.1.5
 pandas==3.0.3
 pandas-datareader==0.10.0
-pytest==9.0.3
+pytest==9.1.1
 pytest-xdist
 requests==2.34.2
 scikit-learn==1.9.0