Fix Gatsby v4 related issues; update some dependencies

4.0.0 - 2021-11-23

• Fix issue that occurred when using Gatsby v4.
• [BREAKING] From this version on, this package will only support Gatsby v4+.
• Update @babel/cli from 7.13.0 to 7.16.0.
• Update @babel/core from 7.13.8 to 7.16.0.
• Update @babel/preset-env from 7.13.9 to 7.16.4.
• Update del-cli from 3.0.1 to 4.0.1.
• Update eslint-config-prettier from 8.1.0 to 8.3.0.
• Update eslint-plugin-import from 2.22.1 to 2.25.3.
• Update jest from 26.6.3 to 27.3.1.
• Update prettier from 2.2.1 to 2.4.1.
• Update gatsby-source-filesystem from 3.0.0 to 4.2.0.
• Update stripe from 8.137.0 to 8.191.0.