chore(release): 4.2.0 [skip ci]

# [4.2.0](v4.1.2...v4.2.0) (2026-08-31)

### Bug Fixes

* **doctor:** cover the branches a machine cannot reach ([f5d6010](f5d6010))

### Features

* **doctor:** check the machine, not just the package ([27855ef](27855ef))

Author: semantic-release-bot

CITATION.cff

@@ -27,4 +27,4 @@ keywords:
   - hardware-model
   - conformance
 license: MIT
-version: 4.1.2
+version: 4.2.0

snesdsp/version.py

@@ -1,3 +1,3 @@
 """The released version, rewritten by the release job and by nothing else."""
 
-VERSION = "4.1.2"
+VERSION = "4.2.0"