op-e2e: 1s L2 block time

[trianglesphere]

Description

This goes from 2s to 1s L2 block times. This is more realistic to have multiple L2 blocks per L1 blocks and it also shaves another minute off of CI. ty to @sebastianst for suggesting this.

[changeset-bot]

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Latest commit: d35d4ae

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[protolambda]

Edit: I misread it as L1 time. Reducing L2 time is fine.

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