feat/improve layers

[iwaduarte]

Fix deployment pipeline and add arm64 architecture support

Summary

Fixed three critical issues preventing layer deployments and README updates:

1. Removed workflow-blocking exit code that prevented README updates
2. Added arm64 (Graviton2) architecture support alongside x64
3. Updated README structure to reflect dual-architecture deployment

Issues Fixed

• Exit code 78 blocking README updates: Changed to exit 0 with skip flag, allowing README workflow to trigger on success
• Version stuck at v50: README workflow was never running due to failed workflow_run dependency
• No arm64 support: Added arm64 layer deployment for all 16 AWS regions

Changes Made

.github/workflows/layers_dispatch.yaml

• Replace exit 78 with exit 0 + skip output flag
• Download both x64 and arm64 chromium zips from Sparticuz/chromium releases
• Publish TWO layer versions per region: chrome-aws-lambda-x64 and chrome-aws-lambda-arm64
• Add conditional execution with if: steps.latest_release.outputs.skip == 'false'

.github/workflows/update_readme.yaml

• Query layer versions for both x64 and arm64 architectures
• Update sed commands to handle new layer naming pattern

readme.md

• Update version from v131 to v141 (will be auto-updated by workflow)
• Split "Available regions" into separate x64 and arm64 sections
• Update Getting Started with architecture-specific ARN examples
• Update Lambda settings to mention both architectures

Breaking Changes ⚠️

IMPORTANT: Layer names have changed:

• Old: chrome-aws-lambda
• New: chrome-aws-lambda-x64 and chrome-aws-lambda-arm64

Existing users will need to update their Lambda functions to use the new layer ARNs. The old chrome-aws-lambda layer will no longer receive updates.

Testing

• Workflow syntax validated
• URL patterns confirmed against Sparticuz/chromium v141.0.0 release
• README format tested with sed patterns

Next Deployment

On next workflow run (daily cron or push to master):

• Will publish 32 new layer versions (2 architectures × 16 regions)
• README will auto-update with correct version numbers