fix: Bump selenium from 4.28.1 to 4.31.0 in /app

Bumps [selenium](https://github.com/SeleniumHQ/Selenium) from 4.28.1 to 4.31.0.
- [Release notes](https://github.com/SeleniumHQ/Selenium/releases)
- [Commits](https://github.com/SeleniumHQ/Selenium/commits/selenium-4.31.0)

---
updated-dependencies:
- dependency-name: selenium
  dependency-version: 4.31.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

app/requirements.txt

@@ -1,6 +1,6 @@
 Flask==3.1.0
 PyYAML==6.0.2
 Requests==2.32.3
-selenium==4.28.1
+selenium==4.31.0
 termcolor==2.5.0
 Werkzeug==3.1.3