Use PNPM and Bun instead of Yarn to install packages and run Anchor tests

[AuroraLantean]

Why does Anchor lock JS package manager and runtime to Yarn? PNPM saves more disk spaces in installing JS packages. Bun runs much faster and supports TypeScript natively.

I can use pnpm to reinstall everything after importing yarn.lock, and deleting node_modules

But in the Anchor.toml

[scripts]
test = "yarn run ts-mocha -p ./tsconfig.json -t 1000000 tests/**/*.ts"

When I changed yarn into bun, anchor test command failed.

     Error: Simulation failed. 
Message: Transaction simulation failed: Error processing Instruction 0: invalid account data for instruction. 
Logs: 
[
  "Program qu3BpUtF7Qv6fHztxeAEbVXeJe... invoke [1]",
  "Program is not deployed",
  "Program qu3BpUtF7Qv6fHztxeAEbVXeJe... failed: invalid account data for instruction"
]. 
Catch the `SendTransactionError` and call `getLogs()` on it for full details.
      at Connection.sendEncodedTransaction (node_modules/.pnpm/@[email protected][email protected][email protected]/node_modules/@solana/web3.js/src/connection.ts:6006:13)
      at processTicksAndRejections (node:internal/process/task_queues:95:5)
      at Connection.sendRawTransaction (node_modules/.pnpm/@[email protected][email protected][email protected]/node_modules/@solana/web3.js/src/connection.ts:5962:20)
      at sendAndConfirmRawTransaction (node_modules/.pnpm/@[email protected][email protected][email protected]/node_modules/@coral-xyz/anchor/src/provider.ts:377:21)
      at AnchorProvider.sendAndConfirm (node_modules/.pnpm/@[email protected][email protected][email protected]/node_modules/@coral-xyz/anchor/src/provider.ts:163:14)
      at MethodsBuilder.rpc [as _rpcFn] (node_modules/.pnpm/@[email protected][email protected][email protected]/node_modules/@coral-xyz/anchor/src/program/namespace/rpc.ts:29:16)

Please advise. Thanks