docs: release notes name the Node 20 and 22 CI matrix

Author: affaan-m

CHANGELOG.md

@@ -54,7 +54,7 @@ All notable changes to this project will be documented in this file.
 ### Validation
 
 - npm run typecheck, npm run lint, npm run build, npm run corpus:gate
-- npm test: 2403 tests across 82 files, on macOS locally and on Linux (Node 18, 20, 22) and Windows (Node 22) in CI
+- npm test: 2403 tests across 82 files, on macOS locally and on Linux (Node 20 and 22) and Windows (Node 22) in CI
 - 268 rule ids across 14 modules
 
 ### Upgrade Notes

release-draft.md

@@ -30,7 +30,7 @@ The release that modernizes the scanner. Every open issue closed, every open pul
 
 ## Validation
 
-- typecheck, lint, build, corpus gate; 2403 tests across 82 files on macOS, Linux (Node 18, 20, 22), and Windows (Node 22).
+- typecheck, lint, build, corpus gate; 2403 tests across 82 files on macOS, Linux (Node 20 and 22), and Windows (Node 22).
 
 ## Upgrade Notes