chore(deps): update dependency @patternfly/documentation-framework to ^6.31.15

Author: renovate[bot]

packages/react-docs/package.json

@@ -37,7 +37,7 @@
     "victory": "^37.3.6"
   },
   "devDependencies": {
-    "@patternfly/documentation-framework": "^6.28.9",
+    "@patternfly/documentation-framework": "^6.31.15",
     "@patternfly/patternfly-a11y": "5.1.0"
   },
   "keywords": [