fixup! fixup! fixup! test: add known_issues test for #13683

Author: Trott

test/known_issues/test-path-posix-relative-on-windows.js

@@ -6,4 +6,5 @@ const path = require('path');
 
 // Refs: https://github.com/nodejs/node/issues/13683
 
-assert.strictEqual(path.posix.relative('a/b/c', '../../x'), '../../../../../x');
+const relativePath = path.posix.relative('a/b/c', '../../x');
+assert.match(relativePath, /^(\.\.\/){3,5}x$/);