Update dependency @lekoarts/gatsby-theme-cara to v5

Author: renovate[bot]

package.json

@@ -16,7 +16,7 @@
     "clean": "gatsby clean"
   },
   "dependencies": {
-    "@lekoarts/gatsby-theme-cara": "1.2.20",
+    "@lekoarts/gatsby-theme-cara": "5.1.1",
     "gatsby": "2.32.13",
     "gatsby-plugin-gatsby-cloud": "1.0.2",
     "gatsby-plugin-google-analytics": "2.11.0",