Update gatsby monorepo

package.json

@@ -16,30 +16,30 @@
   "dependencies": {
     "autoprefixer": "10.2.4",
     "dotenv": "8.2.0",
-    "gatsby": "3.11.1",
+    "gatsby": "3.15.0",
     "gatsby-image": "3.11.0",
-    "gatsby-plugin-canonical-urls": "3.11.0",
-    "gatsby-plugin-catch-links": "3.11.0",
-    "gatsby-plugin-google-analytics": "3.11.0",
-    "gatsby-plugin-manifest": "3.11.0",
-    "gatsby-plugin-offline": "4.11.0",
-    "gatsby-plugin-react-helmet": "4.11.0",
+    "gatsby-plugin-canonical-urls": "3.15.0",
+    "gatsby-plugin-catch-links": "3.15.0",
+    "gatsby-plugin-google-analytics": "3.15.0",
+    "gatsby-plugin-manifest": "3.15.0",
+    "gatsby-plugin-offline": "4.15.0",
+    "gatsby-plugin-react-helmet": "4.15.0",
     "gatsby-plugin-robots-txt": "1.6.8",
-    "gatsby-plugin-sass": "4.11.0",
-    "gatsby-plugin-sharp": "3.11.0",
-    "gatsby-plugin-sitemap": "4.7.0",
-    "gatsby-plugin-typography": "3.11.0",
-    "gatsby-remark-autolink-headers": "4.8.0",
-    "gatsby-remark-copy-linked-files": "4.8.0",
+    "gatsby-plugin-sass": "4.15.0",
+    "gatsby-plugin-sharp": "3.15.0",
+    "gatsby-plugin-sitemap": "4.11.0",
+    "gatsby-plugin-typography": "3.15.0",
+    "gatsby-remark-autolink-headers": "4.12.0",
+    "gatsby-remark-copy-linked-files": "4.12.0",
     "gatsby-remark-emojis": "0.4.3",
     "gatsby-remark-external-links": "0.0.4",
-    "gatsby-remark-images": "5.8.0",
-    "gatsby-remark-prismjs": "5.8.0",
+    "gatsby-remark-images": "5.12.0",
+    "gatsby-remark-prismjs": "5.12.0",
     "gatsby-remark-prismjs-title": "1.0.0",
-    "gatsby-remark-smartypants": "4.8.0",
-    "gatsby-source-filesystem": "3.11.0",
+    "gatsby-remark-smartypants": "4.12.0",
+    "gatsby-source-filesystem": "3.15.0",
     "gatsby-transformer-remark": "4.8.0",
-    "gatsby-transformer-sharp": "3.11.0",
+    "gatsby-transformer-sharp": "3.15.0",
     "github-slugger": "1.3.0",
     "lodash": "4.17.21",
     "lodash.kebabcase": "4.1.1",