fix(gatsby-telemetry): Read installedGatsbyVersion correctly for workspaces (#31196) (#31208)

* Read Gatsby version correctly

* Simplify logic

Co-authored-by: Jarmo Isotalo <jamo@isotalo.fi>
(cherry picked from commit af12b66)

Co-authored-by: Sidhartha Chatterjee <me@sidharthachatterjee.com>

Author: GatsbyJS Bot

packages/gatsby-telemetry/src/telemetry.ts

@@ -215,14 +215,10 @@ export class AnalyticsTracker {
   }
 
   getGatsbyVersion(): SemVer {
-    const packageInfo = require(join(
-      process.cwd(),
-      `node_modules`,
-      `gatsby`,
-      `package.json`
-    ))
     try {
-      return packageInfo.version
+      const packageJson = require.resolve(`gatsby/package.json`)
+      const { version } = JSON.parse(fs.readFileSync(packageJson, `utf-8`))
+      return version
     } catch (e) {
       // ignore
     }