message: feat(gatsby): Support Gatsby v4
  The only relevant changes for our SDK to support v4 are and only the `gatsby` peer dependency version upgrade applies. don't apply either.
diff: "@sentry/tracing": "6.14.0"
  },
  "peerDependencies": {
  - "gatsby": "^2.0.0 || ^3.0.0"
  + "gatsby": "^2.0.0 || ^3.0.0 || ^4.0.0"
  },
  "devDependencies": {
  "@sentry/types": "6.14.0",
  