chore(release): prepare for v7.5.30 (#511)

## [7.5.30] - 2026-10-27

### Chore

- *(deps)* Update python:3.15.1-slim docker digest to 08275f7 (#504)
- *(deps)* Update python:3.15.1-slim docker digest to 533b0b2 (#506)
- *(deps)* Update python docker tag to v3.15.2 (#508)
- *(deps)* Update python:3.15.2-slim docker digest to 197f662 (#510)

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

---

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

Reviewed-on: https://gitea.unbound.se/unboundsoftware/robotframework/pulls/511
Co-authored-by: Unbound Releaser <releaser@unbound.se>

.version

@@ -1,3 +1,3 @@
 {
-  "version": "v7.5.29"
+  "version": "v7.5.30"
 }

CHANGELOG.md

@@ -2,6 +2,15 @@
 
 All notable changes to this project will be documented in this file.
 
+## [7.5.30] - 2026-10-27
+
+### Chore
+
+- *(deps)* Update python:3.15.1-slim docker digest to 08275f7 (#504)
+- *(deps)* Update python:3.15.1-slim docker digest to 533b0b2 (#506)
+- *(deps)* Update python docker tag to v3.15.2 (#508)
+- *(deps)* Update python:3.15.2-slim docker digest to 197f662 (#510)
+
 ## [7.5.29] - 2026-10-22
 
 ### Chore