chore: bump to react-core alpha.7 to include masthead

Author: nicolethoen

package-lock.json

@@ -79,9 +79,9 @@
     "webpack-merge": "^5.9.0"
   },
   "dependencies": {
-    "@patternfly/react-core": "6.0.0-alpha.5",
-    "@patternfly/react-icons": "6.0.0-alpha.4",
-    "@patternfly/react-styles": "6.0.0-alpha.4",
+    "@patternfly/react-core": "6.0.0-alpha.7",
+    "@patternfly/react-icons": "6.0.0-alpha.5",
+    "@patternfly/react-styles": "6.0.0-alpha.5",
     "@storybook/builder-webpack5": "^7.5.3",
     "react": "^18",
     "react-dom": "^18",