chore(get-started): updating cardano-node requirements

[mmahut]

Updating documentation

Updating the minimal requirements for cardano-node, they have changed since the last edit.

https://github.com/input-output-hk/cardano-node/releases/tag/1.32.1

[katomm]

👍

[rdlrt]

minimal requirements for cardano-node

Is that accurate? Those requirements should be for mainnet - we can run node with other networks on much smaller instances (hence, the note after the lines being edited).

Having said that, what we have now isnt "minimum requirement" either. The IO documentation does not differentiate between component requirements and network

[os11k]

I tend to agree with @rdlrt , I do run pool in testnet with 8GB with no problem at all, so this will be misleading to put 12GB there.

[katomm]

Could we agree on minimum requirements for different networks? like @rdlrt suggested. I think that would be brilliant.

Network	CPU Cores*	RAM	Storage
Testnet	2	4GB	10GB
Staging	2	4GB	10GB
Mainnet	2	12GB	30GB

*An Intel or AMD x86 processor with two or more cores, at 1.6GHz or faster (2GHz or faster for a stake pool or relay)