Bump robotframework from 7.0 to 7.1.1 in /tests/rf_versions_matrix/rf7 (#731)

Bumps [robotframework](https://github.com/robotframework/robotframework) from 7.0 to 7.1.1.
- [Release notes](https://github.com/robotframework/robotframework/releases)
- [Commits](robotframework/robotframework@v7.0...v7.1.1)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

tests/rf_versions_matrix/rf7/requirements.txt

@@ -1 +1 @@
-robotframework==7.0
+robotframework==7.1.1