deps: Bump @ui5/linter from 1.19.0 to 1.20.0

Dependabot couldn't find the original pull request head commit, 7a20781.

Author: dependabot[bot]

npm-shrinkwrap.json

@@ -75,7 +75,7 @@
 	},
 	"dependencies": {
 		"@modelcontextprotocol/sdk": "^1.18.0",
-		"@ui5/linter": "^1.19.0",
+		"@ui5/linter": "^1.20.0",
 		"@ui5/logger": "^4.0.2",
 		"@ui5/project": "^4.0.6",
 		"async-mutex": "^0.5.0",