Update egg-pterodactyl-vanilla-bedrock-a-r-m64.json

[Notacod3r]

Description

This PR fixes the non-functional ARM64 Vanilla Bedrock egg installer by refactoring the install script to:

• Default BEDROCK_VERSION to “latest” if unset
• Install the jq utility and switch to Mojang’s JSON API (replacing brittle HTML scraping) for grabbing the server download URL
• Use a consistent download filename (bedrock-server-installer.zip)
• Fail fast on directory errors (cd /mnt/server || exit 1)
• Atomically back up and restore config files in /tmp/config_backup
• Surface clear, actionable error messages and exit with non-zero status on any failure

Checklist for all submissions

• Have you followed the guidelines in our [Contributing document](https://github.com/pelican-eggs/minecraft/blob/main/CONTRIBUTING.md)?

• Have you checked to ensure there aren't other open [Pull Requests](../pulls) for the same update/change?

• Have you tested and reviewed your changes with confidence that everything works?

• Did you branch your changes and PR from that branch and not from your master branch?

  • If not, why?

• You verify that the start command applied does not use a shell script

  • If some script is needed then it is part of a current yolk or a PR to add one

• The egg was exported from the panel

New egg Submissions

1. Does your submission pass tests (server is connectable)?

2. Does your egg use a custom docker image?

   • Have you tried to use a generic image?
   • Did you PR the necessary changes to make it work?

3. Have you added the egg to the main README.md and any other README files in subdirectories of the egg (e.g /game_eggs) according to the alphabetical order?

4. Have you added a unique README.md for the egg you are adding according to the alphabetical order?

5. You verify that the start command applied does not use a shell script

   • If some script is needed then it is part of a current yolk or a PR to add one

6. The egg was exported from the panel

[Notacod3r]

Fix for #81

[gOOvER]

Fix for #81

please update plican eggs too. else this PR will not merged