increase docs-rs volume speed

[marcoieni]

Note that this is for the next infrastructure environment. I already increased the speed of the volume of the EC2 used currently in production (that is not in IaC).

Discussed in #t-docs-rs > New docs.rs infrastructure @ 💬

Plan

staging: no changes detected

prod:

  ~ resource "aws_instance" "builder" {
        id                                   = "i-070b829bb64d5089f"
        tags                                 = {
            "Name" = "docs-rs-builder"
        }
        # (41 unchanged attributes hidden)

      ~ root_block_device {
          ~ iops                  = 3000 -> 8000
            tags                  = {}
          ~ throughput            = 125 -> 500
            # (8 unchanged attributes hidden)
        }

        # (7 unchanged blocks hidden)
    }

AI disclosure

I used GPT5.5 with the codex harness to generate this change. I reviewed its output and no changes where necessary