Update README: Update vulnerable dependencies

[crStiv]

Updates the following dependencies to resolve security vulnerabilities:

• webrick from 1.8.1 to 1.8.2 (fixes CVE-2024-47220)
• rexml from 3.2.5 to 3.3.9 (fixes CVE-2024-49761)

Fixes #9115

[eth-bot]

File Gemfile

Requires 2 more reviewers from @g11tech, @lightclient, @samwilsn, @xinbenlv

File Gemfile.lock

Requires 2 more reviewers from @g11tech, @lightclient, @samwilsn, @xinbenlv

File README.md

Requires 2 more reviewers from @g11tech, @lightclient, @samwilsn, @xinbenlv

[crStiv]

While webrick 1.8.2 addresses the vulnerability, the maintainers have mentioned that webrick is not intended for production - ruby/webrick#145 (comment)

@SkandaBhat Thnx pointing this out!

As webrick used only for local development here in the EIPs repo - just for preview purposes and it's not production-ready, I think it still helps keep dev environments secure.

I could add a quick note in the docs about webrick's limitations if you think that would be helpful?

[github-actions[bot]]

The commit a125e8b57f9947325d7118dc2a4935acacea7946 (as a parent of ad3ba9609c70318df1057aaacfbfa9fbe31dbac8) contains errors. Please inspect the Run Summary for details.

[SamWilsn]

You'll need to regenerate the Gemfile.lock before this'll merge.

[github-actions[bot]]

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