Release 1.5.1 patch version

[pilgd-aws]

Checklist

• [ x] Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged) - Instead we are 1:1 with https://github.com/aws/sagemaker-code-editor/ using 1.5.1
• Reset the build number to 0 (if the version changed) - Instead we are 1:1 with https://github.com/aws/sagemaker-code-editor/ using 1.5.1
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.
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Unsure which checkboxes above I need for this change

PR Summary

• Update version from 1.6.1 to 1.5.1
• Add memory optimizations to prevent build failures:
  • Limit Node.js heap size to 2GB (Node ate too much memory in previous PRs even with no changes, ex: readme change test #83)
  • Reduce thread pool size to 2
  • Disable webpack parallelization
  • Limit yarn network concurrency
• Tested successfully in CodeBuild environment as well

Fixes build failures caused by memory exhaustion during webpack bundling step.

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found it was in an excellent condition.

[aws-prayags]

@conda-forge-admin please rerender

[aws-prayags]

would be good to link a failed run here for context

[aws-prayags]

we should add comment noting how this helps

[aws-prayags]

to check if this has to be specified both in meta.yaml and build.sh