Update dependency globby to v11 (postcss#317)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package.json

@@ -23,7 +23,7 @@
     "dependency-graph": "^0.9.0",
     "fs-extra": "^9.0.0",
     "get-stdin": "^7.0.0",
-    "globby": "^10.0.1",
+    "globby": "^11.0.0",
     "postcss": "^7.0.0",
     "postcss-load-config": "^2.0.0",
     "postcss-reporter": "^6.0.0",