chore(release): prepare for v7.5.16 (#358)

## [7.5.16] - 2026-05-17

### Chore

- *(deps)* Update dependency robotframework-browser to v19.15.1 (#357)

<!-- generated by git-cliff -->

---

**Note:** Please use **Squash Merge** when merging this PR.

Reviewed-on: https://gitea.unbound.se/unboundsoftware/robotframework/pulls/358
Co-authored-by: Unbound Releaser <releaser@unbound.se>
Co-committed-by: Unbound Releaser <releaser@unbound.se>

.version

@@ -1,3 +1,3 @@
 {
-  "version": "v7.5.15"
+  "version": "v7.5.16"
 }