chore(deps): bump gatsby-remark-prismjs from 3.3.30 to 3.3.31

Bumps [gatsby-remark-prismjs](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-remark-prismjs) from 3.3.30 to 3.3.31.
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-remark-prismjs/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/[email protected]/packages/gatsby-remark-prismjs)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

yarn.lock

@@ -10972,9 +10972,9 @@ gatsby-remark-images@^3.1.44:
     unist-util-visit-parents "^2.1.2"
 
 gatsby-remark-prismjs@^3.2.9:
-  version "3.3.30"
-  resolved "https://registry.yarnpkg.com/gatsby-remark-prismjs/-/gatsby-remark-prismjs-3.3.30.tgz#990203b5d174af9a609e32019a3b62cd5dc16332"
-  integrity sha512-DFcFAcvYHmx9FM5P/CRkCbQH4nSPmZ9DRaocAUxH7ZJtF2nMGYp1suYa8BEJKmM/EwvFxLdGoRoN+5FzO56qZQ==
+  version "3.3.31"
+  resolved "https://registry.yarnpkg.com/gatsby-remark-prismjs/-/gatsby-remark-prismjs-3.3.31.tgz#b5df868642dc78e3d38576d7e9f6eab23d2b6a80"
+  integrity sha512-n6tczCq/w5LazZ5yk9UXu/6YjyLR7p1rQbBxqgkOL1xEFRmQcK5BwFhcpmCh5OKiqWBvqLDJq561UIFL0jcI/A==
   dependencies:
     "@babel/runtime" "^7.7.6"
     parse-numeric-range "^0.0.2"