build(deps-dev): bump babel-preset-gatsby from 0.2.29 to 0.2.31

Bumps [babel-preset-gatsby](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/babel-preset-gatsby) from 0.2.29 to 0.2.31.
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/babel-preset-gatsby/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/babel-preset-gatsby@0.2.31/packages/babel-preset-gatsby)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

website/yarn.lock

@@ -2588,9 +2588,9 @@ babel-plugin-transform-react-remove-prop-types@^0.4.24:
   integrity sha512-eqj0hVcJUR57/Ug2zE1Yswsw4LhuqqHhD+8v120T1cl3kjg76QwtyBrdIk4WVwK+lAhBJVYCd/v+4nc4y+8JsA==
 
 babel-preset-gatsby@^0.2.22, babel-preset-gatsby@^0.2.26:
-  version "0.2.29"
-  resolved "https://registry.yarnpkg.com/babel-preset-gatsby/-/babel-preset-gatsby-0.2.29.tgz#cf50a2ec0e6d44fd715b559bfd5481c4221cab5c"
-  integrity sha512-asJV/UMq7riYiY4ZhMi83Mbhwwtkvhp9gmmJgJJSJyAWw/tTgAmYan6Udpco3P4Kvd91lj+f8kzXJHT0G2sdwQ==
+  version "0.2.31"
+  resolved "https://registry.yarnpkg.com/babel-preset-gatsby/-/babel-preset-gatsby-0.2.31.tgz#d72f5bf40a27c8c4053a53bd0adf0f03cf186fd4"
+  integrity sha512-2PhWjAli3hXcK0ASieOQZgiU4b6THA5/OWJSz5ZM3snmf1oqlWqhRJfzj6RXu2BkwvoGI5Hu9krEcVEgZKGTeQ==
   dependencies:
     "@babel/plugin-proposal-class-properties" "^7.7.4"
     "@babel/plugin-proposal-nullish-coalescing-operator" "^7.7.4"
@@ -2604,7 +2604,7 @@ babel-preset-gatsby@^0.2.22, babel-preset-gatsby@^0.2.26:
     babel-plugin-dynamic-import-node "^2.3.0"
     babel-plugin-macros "^2.8.0"
     babel-plugin-transform-react-remove-prop-types "^0.4.24"
-    gatsby-core-utils "^1.0.28"
+    gatsby-core-utils "^1.0.30"
 
 babel-runtime@6.23.0:
   version "6.23.0"
@@ -6246,12 +6246,13 @@ gatsby-cli@^2.8.22:
     ink "^2.6.0"
     ink-spinner "^3.0.1"
 
-gatsby-core-utils@^1.0.25, gatsby-core-utils@^1.0.28:
-  version "1.0.28"
-  resolved "https://registry.yarnpkg.com/gatsby-core-utils/-/gatsby-core-utils-1.0.28.tgz#aa66e49cdcc1892e7817a32fdd806cf5e16ea309"
-  integrity sha512-XWKR9Rk2v6iQkmBsTLCdI3adyC9PCh1s5BQ85nlGitlgcVVQq98jZlQdcy0v9mJOrTuce0uf5RqkeGDWFLekoA==
+gatsby-core-utils@^1.0.25, gatsby-core-utils@^1.0.28, gatsby-core-utils@^1.0.30:
+  version "1.0.30"
+  resolved "https://registry.yarnpkg.com/gatsby-core-utils/-/gatsby-core-utils-1.0.30.tgz#c2b61017405b01e2f34f2c57117b4716c75e010f"
+  integrity sha512-+WYFxf9dT4u67vecXdROe9iF2jzPKoTVbWI3FYLCcNANY2Y/vEec11vhG5FnBHdLpgmD3cnLPdhCAileKWBldA==
   dependencies:
     ci-info "2.0.0"
+    configstore "^5.0.0"
     node-object-hash "^2.0.0"
 
 gatsby-graphiql-explorer@^0.2.31: