vbash: T7575: Update to bash 5.2.37

[sarthurdev]

Change Summary

Updates vyatta-bash onto bash 5.2

Feel free to review this PR line by line :)

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: Remove bash version constraints vyatta-cfg#105
• vbash: T7575: Fix bash-completion for bash 5.2 vyos-1x#4577

Component(s) name

Proposed changes

How to test

vyos@vyos:~$ sh ver | head -3
Version:          VyOS 999.202506241614
Release train:    current
Release flavor:   generic
vyos@vyos:~$ vbash --version | head -1
GNU bash, version 5.2.37(1)-release (x86_64-pc-linux-gnu)

Smoketest result

Checklist:

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

[github-actions]

👍
No issues in PR Title / Commit Title

[dmbaturin]

The idea to upgrade to Trixie is on hold now, so I'm closing this PR series — not because they are bad, we'll reopen and merge them when we are ready to upgrade.