ci: fix ignorePaths pattern

Negated glob patterns would have too broad of a match, so they don't
fit in ignorePaths. I choose to use a more specific pattern to only
ignore the test fixture with older espree version.

Author: haoqunjiang

renovate.json

@@ -4,7 +4,7 @@
     "github>haoqunjiang/renovate-presets:npm.json5"
   ],
   "ignorePaths": [
-    "!examples/**",
-    "!test/fixtures/file-based-routing"
+    "**/node_modules/**",
+    "**/test/fixtures/with-older-espree"
   ]
 }