fix(types): update TypeScript declarations (#13755)
fix(types): update TypeScript declarations (#13755)

- replace Express.js Application type import with any to avoid @types/express dependency
- update addThirdPartySchema, createTypes, and createParentChildLink signatures
gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby,ChristopherBiscardi/gatsby