Bump jinja2 in /docs/examples/fork-process-model/flask-gunicorn

Bumps [jinja2](https://github.com/pallets/jinja) from 3.1.4 to 3.1.5.
- [Release notes](https://github.com/pallets/jinja/releases)
- [Changelog](https://github.com/pallets/jinja/blob/main/CHANGES.rst)
- [Commits](pallets/jinja@3.1.4...3.1.5)

---
updated-dependencies:
- dependency-name: jinja2
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

docs/examples/fork-process-model/flask-gunicorn/requirements.txt

@@ -4,7 +4,7 @@ googleapis-common-protos==1.52.0
 grpcio==1.56.2
 gunicorn==22.0.0
 itsdangerous==2.1.2
-Jinja2==3.1.4
+Jinja2==3.1.5
 MarkupSafe==2.1.3
 opentelemetry-api==1.20.0
 opentelemetry-exporter-otlp==1.20.0