chore(charts/n8n): update n8nio/n8n docker tag to v1.57.0

This MR contains the following updates:

Package	Update	Change
n8nio/n8n (source)	minor	1.56.2 -> 1.57.0

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Release Notes

n8n-io/n8n (n8nio/n8n)

v1.57.0

Bug Fixes

• AI Agent Node: Allow AWS Bedrock Chat to be used with conversational agent (#​10489) (bdcc657)
• core: Make boolean config value parsing backward-compatible (#​10560) (70b410f)
• core: Restore Redis cache key (#​10520) (873056a)
• core: Scheduler tasks should not trigger on follower instances (#​10507) (3428f28)
• core: Stop explicit redis client disconnect on shutdown (#​10551) (f712812)
• editor: Ensure Datatable component renders All option (#​10525) (bc27beb)
• editor: Prevent Safari users from accessing the frontend over insecure contexts (#​10510) (a73b9a3)
• editor: Scale output item selector input width with value (#​10555) (52c574d)
• Google Sheets Trigger Node: Show sheet name is too long error (#​10542) (4e15007)
• Wait Node: Prevent waiting until invalid date (#​10523) (c0e7620)

Features

• Add new credentials for the HTTP Request node (#​9833) (26f1af3)
• AI Agent Node: Add tutorial link to agent node (#​10493) (5c7cc36)
• core: Expose queue metrics for Prometheus (#​10559) (008c510)
• editor: Implement workflowSelector parameter type (#​10482) (84e54be)

Performance Improvements

• core: Make execution queries faster (#​9817) (dc7dc99)

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