Fix for `poeple-*` benchmarks command + added them to CI (#3146)

Found it when trying to run: 
```
bot bench-all pallet --pallet=pallet_balances
```
https://gitlab.parity.io/parity/mirrors/polkadot-sdk/-/jobs/5081585

## TODO
- [x] check/fix command bot for `people-westend-dev` /
`people-rococo-dev`
https://github.com/paritytech/command-bot-scripts/pull/67