Bump click from 8.1.7 to 8.1.8 (#2698)

Bumps [click](https://github.com/pallets/click) from 8.1.7 to 8.1.8.
- [Release notes](https://github.com/pallets/click/releases)
- [Changelog](https://github.com/pallets/click/blob/main/CHANGES.rst)
- [Commits](pallets/click@8.1.7...8.1.8)

---
updated-dependencies:
- dependency-name: click
  dependency-version: 8.1.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Pamela Fox <pamelafox@microsoft.com>

Author: dependabot[bot]

app/backend/requirements.txt

@@ -79,7 +79,7 @@ cffi==1.17.0
     # via cryptography
 charset-normalizer==3.3.2
     # via requests
-click==8.1.7
+click==8.1.8
     # via
     #   flask
     #   prompty