refactor!: migrate away from bun

- migrate package management to pnpm
- migrate test suite to vitest
- also remove Anify integration

src/libs/gcloud/getAdminSdkCredentials.ts

@@ -2,13 +2,12 @@ import { env as cloudflareEnv } from "cloudflare:workers";
 import mapKeys from "lodash.mapkeys";
 
 import { Case, changeStringCase } from "../changeStringCase";
-import { readEnvVariable } from "../readEnvVariable";
 
 export function getAdminSdkCredentials(env: Cloudflare.Env = cloudflareEnv) {
   return mapKeys(
-    readEnvVariable<AdminSdkCredentials>("ADMIN_SDK_JSON", env),
+    JSON.parse(env.ADMIN_SDK_JSON) as AdminSdkCredentials,
     (_, key) => changeStringCase(key, Case.snake_case, Case.camelCase),
-  ) as unknown as AdminSdkCredentials;
+  );
 }
 
 export interface AdminSdkCredentials {