Bump robotframework from 7.2rc1 to 7.2 in /tests/rf_versions_matrix/rf7 (#736)

Bumps [robotframework](https://github.com/robotframework/robotframework) from 7.2rc1 to 7.2.
- [Release notes](https://github.com/robotframework/robotframework/releases)
- [Commits](https://github.com/robotframework/robotframework/commits/v7.2)

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

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tests/rf_versions_matrix/rf7/requirements.txt

@@ -1 +1 @@
-robotframework==7.2rc1
+robotframework==7.2