vbash: T7575: Remove bash version constraints

[sarthurdev]

Change Summary

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Other (please describe):

Related Task(s)

Related PR(s)

• vbash: T7575: Update to bash 5.2.37 vyatta-bash#15
• vbash: T7575: Fix bash-completion for bash 5.2 vyos-1x#4577

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• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly

[github-actions]

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[dmbaturin]

This PR partially duplicates the changes made in #104

Could we possibly make this change in the Bookworm-based version to make our lives simpler in the future?

I think it also deserves its own subtask of T7557.