fix(firestore-bigquery-changetracker): do not cluster invalid types (#2255)

* chore(firestore-bigquery-changetracker): fix tests

* fix(firestore-bigquery-changetracker): do not update clustering if incorrect type

Author: cabljac

firestore-bigquery-export/firestore-bigquery-change-tracker/jest.config.js

@@ -4,6 +4,7 @@ module.exports = {
   name: packageJson.name,
   displayName: packageJson.name,
   rootDir: "./",
+  types: ["jest", "node"],
   globals: {
     "ts-jest": {
       tsConfig: "<rootDir>/tsconfig.test.json",