bump rpc disk size requirement to 350Gb

[cjonas9]

What

Updated the RPC minimum hardware recommendations page:

• bumps RPC's disk size requirement to 350Gb instead of 250Gb
• drops recommendation to use a "quad core CPU" for intense load
• shys away from "100 RPS"/"1000 RPS"-based recommendations in favor of "modest load (e.g. 100 RPS on average"/"heavier request volume"
• updates the Spanish counterparts of these recommendations

Why

Respective to the bullets above,

• when it holds on one week of ledgers/120,960 ledgers, RPC's disk can grow to exceed 300Gb. 350Gb seems to provide a safe buffer.
• we recommend 4-8 vCPUs minimum irrespective of load. recommending a "quad core CPU" for more intense load doesn't make any sense
• there's no grounding for absolutist claims around 100 RPS/1000 RPS, especially because depending on what the request looks like (e.g. is the requestgetHealth or is it getLedgers w/ count=200), we may easily clear 1000 RPS on the recommended c5.2xlarge or may not clear 1 RPS.
• the Spanish counterpart not only needed the same changes as were made to the English recommendations, but also, it recommended an even more insufficient machine (c5.xlarge)

[Copilot]

Pull request overview

Updates the Stellar RPC admin prerequisites to raise the documented persistent disk requirement from 250 GB to 350 GB.

Changes:

• Bumps the English RPC minimum disk requirement to 350 GB.
• Bumps the Spanish translated RPC minimum disk requirement to 350 GB.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
docs/data/apis/rpc/admin-guide/prerequisites.mdx	Updates the English RPC hardware requirements table.
i18n/es/docusaurus-plugin-content-docs/current/data/apis/rpc/admin-guide/prerequisites.mdx	Updates the Spanish translated RPC hardware requirements table.

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