fix(deps): update gatsby

package.json

@@ -41,20 +41,20 @@
     "bluebird": "^3.7.1",
     "classnames": "^2.2.6",
     "codecov": "^3.6.1",
-    "gatsby": "^2.17.4",
+    "gatsby": "^2.17.7",
     "gatsby-link": "^2.2.22",
     "gatsby-plugin-catch-links": "^2.1.15",
     "gatsby-plugin-feed": "^2.3.19",
     "gatsby-plugin-flow": "^1.1.12",
     "gatsby-plugin-google-gtag": "^1.1.14",
-    "gatsby-plugin-manifest": "^2.2.23",
-    "gatsby-plugin-netlify": "^2.1.22",
-    "gatsby-plugin-netlify-cms": "^4.1.25",
-    "gatsby-plugin-offline": "^3.0.16",
+    "gatsby-plugin-manifest": "^2.2.26",
+    "gatsby-plugin-netlify": "^2.1.23",
+    "gatsby-plugin-netlify-cms": "^4.1.26",
+    "gatsby-plugin-offline": "^3.0.17",
     "gatsby-plugin-optimize-svgs": "^1.0.3",
     "gatsby-plugin-react-helmet": "^3.1.13",
     "gatsby-plugin-sass": "^2.1.20",
-    "gatsby-plugin-sharp": "^2.2.32",
+    "gatsby-plugin-sharp": "^2.2.36",
     "gatsby-plugin-sitemap": "^2.2.19",
     "gatsby-remark-autolink-headers": "^2.1.16",
     "gatsby-remark-copy-linked-files": "^2.1.28",
@@ -65,9 +65,9 @@
     "gatsby-remark-relative-images": "^0.2.3",
     "gatsby-remark-responsive-iframe": "^2.2.25",
     "gatsby-remark-smartypants": "^2.1.14",
-    "gatsby-source-filesystem": "^2.1.33",
-    "gatsby-transformer-remark": "^2.6.30",
-    "gatsby-transformer-sharp": "^2.3.0",
+    "gatsby-source-filesystem": "^2.1.35",
+    "gatsby-transformer-remark": "^2.6.32",
+    "gatsby-transformer-sharp": "^2.3.2",
     "invariant": "^2.2.4",
     "katex": "^0.11.1",
     "lodash": "^4.17.15",