Fix type declarations for custom message arguments (#6354)

Disabling the checks for lib files will hide typescript errors in the
stylelint type definitions, as those are loaded as a lib type when
type-checking type-test.ts

.changeset/eleven-monkeys-return.md

@@ -0,0 +1,5 @@
+---
+"stylelint": patch
+---
+
+Fixed: type declarations for custom message arguments

tsconfig.json

@@ -15,7 +15,7 @@
 		"noUncheckedIndexedAccess": true,
 		"esModuleInterop": true,
 		"resolveJsonModule": true,
-		"skipLibCheck": true,
+		"skipLibCheck": false,
 		"typeRoots": ["./types", "./node_modules/@types"]
 	},
 	"include": ["lib", "types", "package.json"],

types/stylelint/index.d.ts

@@ -353,7 +353,7 @@ declare module 'stylelint' {
 			ruleName: string;
 			result: PostcssResult;
 			message: RuleMessage;
-			messageArgs?: Parameters<RuleMessage> | undefined;
+			messageArgs?: Parameters<RuleMessageFunc> | undefined;
 			node: PostCSS.Node;
 			/**
 			 * The inclusive start index of the problem, relative to the node's