Bump tough-cookie, gatsby-plugin-sharp, gatsby-transformer-sharp and node-sass

Removes [tough-cookie](https://github.com/salesforce/tough-cookie). It's no longer used after updating ancestor dependencies [tough-cookie](https://github.com/salesforce/tough-cookie), [gatsby-plugin-sharp](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-plugin-sharp), [gatsby-transformer-sharp](https://github.com/gatsbyjs/gatsby/tree/HEAD/packages/gatsby-transformer-sharp) and [node-sass](https://github.com/sass/node-sass). These dependencies need to be updated together.


Removes `tough-cookie`

Updates `gatsby-plugin-sharp` from 2.6.17 to 2.14.4
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-plugin-sharp/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-plugin-sharp@2.14.4/packages/gatsby-plugin-sharp)

Updates `gatsby-transformer-sharp` from 2.5.10 to 2.12.1
- [Release notes](https://github.com/gatsbyjs/gatsby/releases)
- [Changelog](https://github.com/gatsbyjs/gatsby/blob/master/packages/gatsby-transformer-sharp/CHANGELOG.md)
- [Commits](https://github.com/gatsbyjs/gatsby/commits/gatsby-transformer-sharp@2.12.1/packages/gatsby-transformer-sharp)

Updates `node-sass` from 4.14.1 to 9.0.0
- [Release notes](https://github.com/sass/node-sass/releases)
- [Changelog](https://github.com/sass/node-sass/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sass/node-sass/compare/v4.14.1...v9.0.0)

---
updated-dependencies:
- dependency-name: tough-cookie
  dependency-type: indirect
- dependency-name: gatsby-plugin-sharp
  dependency-type: direct:production
- dependency-name: gatsby-transformer-sharp
  dependency-type: direct:production
- dependency-name: node-sass
  dependency-type: direct:production
...

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

package.json

@@ -11,12 +11,12 @@
     "gatsby-plugin-offline": "^3.2.0",
     "gatsby-plugin-react-helmet": "^3.3.0",
     "gatsby-plugin-sass": "^2.3.10",
-    "gatsby-plugin-sharp": "^2.6.0",
+    "gatsby-plugin-sharp": "^2.14.4",
     "gatsby-source-filesystem": "^2.3.0",
-    "gatsby-transformer-sharp": "^2.5.0",
+    "gatsby-transformer-sharp": "^2.12.1",
     "logrocket": "^1.0.10",
     "mobx": "^5.15.4",
-    "node-sass": "^4.14.1",
+    "node-sass": "^9.0.0",
     "prop-types": "^15.7.2",
     "react": "^16.12.0",
     "react-dom": "^16.12.0",