Updated the node version to fix error

[ruhi-chaddha]

Description
Updated the node version to fix this error:

hugo: /lib/x86_64-linux-gnu/libm.so.6: version `GLIBC_2.29' not found (required by hugo)

  | hugo: /lib/x86_64-linux-gnu/libc.so.6: version GLIBC_2.33' not found (required by hugo)   | hugo: /lib/x86_64-linux-gnu/libc.so.6: version GLIBC_2.32' not found (required by hugo)
  | hugo: /lib/x86_64-linux-gnu/libc.so.6: version GLIBC_2.34' not found (required by hugo)   | hugo: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version GLIBCXX_3.4.26' not found (required by hugo)
  | hugo: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version `GLIBCXX_3.4.29' not found (required by hugo)

[gemini-code-assist]

Summary of Changes

Hello @ruhi-chaddha, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request addresses and resolves critical GLIBC version errors encountered during the build process by updating the Node.js runtime environment within the webhook Docker image. The change ensures compatibility with required system libraries, allowing the application to build and run correctly.

Highlights

• Node.js Version Update: The Node.js base image in the deploy/webhook-v2/Dockerfile has been upgraded from node:16-stretch to node:20-bookworm.

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Changelog

• deploy/webhook-v2/Dockerfile
  • Updated the base Node.js image from version 16 (stretch) to version 20 (bookworm).

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[gemini-code-assist]

Code Review

This pull request updates the base image in the Dockerfile from node:16-stretch to node:20-bookworm to resolve GLIBC compatibility issues with Hugo. This is a positive change as it moves to a current Node.js LTS version and a newer OS. However, I've raised a concern that the outdated npm dependencies (firebase-tools and autoprefixer) may be incompatible with Node 20, potentially causing the build to fail. I recommend updating these dependencies to ensure a successful and stable build.

[gemini-code-assist]

While updating to node:20-bookworm is a good step to resolve the GLIBC issue, it may cause the build to fail due to outdated npm dependencies. The versions of firebase-tools (7.13.1, from 2020) and autoprefixer (9.8.6, from 2020) are very old and likely incompatible with Node.js 20.

I recommend updating these dependencies to more recent versions that are compatible with Node 20. Additionally, for more reproducible builds, consider pinning the versions of postcss and postcss-cli.