Upgrade versions

demo/package.json

@@ -5,30 +5,30 @@
   "author": "Asko Soukka <asko.soukka@iki.fi>",
   "dependencies": {
     "bootstrap": "^4.3.1",
-    "gatsby": "2.13.35",
-    "gatsby-image": "^2.2.6",
-    "gatsby-plugin-react-helmet": "^3.1.2",
-    "gatsby-plugin-sass": "^2.1.3",
-    "gatsby-plugin-sharp": "^2.2.9",
-    "gatsby-source-filesystem": "^2.1.6",
+    "gatsby": "2.15.1",
+    "gatsby-image": "^2.2.15",
+    "gatsby-plugin-react-helmet": "^3.1.5",
+    "gatsby-plugin-sass": "^2.1.12",
+    "gatsby-plugin-sharp": "^2.2.18",
+    "gatsby-source-filesystem": "^2.1.18",
     "gatsby-source-plone": "https://github.com/collective/gatsby-source-plone.git#master",
-    "gatsby-transformer-sharp": "^2.2.4",
+    "gatsby-transformer-sharp": "^2.2.12",
     "node-sass": "^4.12.0",
-    "react": "^16.8.6",
-    "react-dom": "^16.8.6",
+    "react": "^16.9.0",
+    "react-dom": "^16.9.0",
     "react-helmet": "^5.2.1",
     "react-icons": "^3.7.0",
-    "react-redux": "^7.1.0",
+    "react-redux": "^7.1.1",
     "react-serialize": "^0.2.0",
-    "redux": "^4.0.1",
+    "redux": "^4.0.4",
     "typography": "^0.16.19",
     "typography-theme-twin-peaks": "^0.16.19"
   },
   "license": "MIT",
   "main": "n/a",
   "devDependencies": {
-    "dotenv": "^8.0.0",
+    "dotenv": "^8.1.0",
     "prettier": "^1.18.2",
-    "yalc": "^1.0.0-pre.32"
+    "yalc": "^1.0.0-pre.34"
   }
 }