Merge pull request #317 from HubSpot/cc/update-platform-version-type

chore: Update platformVersion to be a string

Author: chiragchadha1

types/Build.ts

@@ -37,7 +37,7 @@ export type Build = {
   subbuildStatuses: Array<SubbuildStatus>;
   uploadMessage: string;
   autoDeployId: number;
-  platformVersion: number;
+  platformVersion: string;
 };
 
 export type FetchProjectBuildsResponse = {