Bump pytest from 7.4.4 to 8.3.2 in /book/src

Bumps [pytest](https://github.com/pytest-dev/pytest) from 7.4.4 to 8.3.2.
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@7.4.4...8.3.2)

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

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

Author: dependabot[bot]

book/src/requirements.txt

@@ -10,7 +10,7 @@ pinject==0.14.1
 pip-tools==7.4.1
 pyflakes==3.1.0
 pylint==3.2.7
-pytest==7.4.4
+pytest==8.3.2
 pytest-cov==4.1.0
 pytype==2024.4.11
 requests==2.32.3