T6173: validate allowed characters in ISO image name

[c-po]

Change Summary

Building custom VyOS version: 1.5-asdf%-202404081841
I: Checking if packages required for VyOS image build are installed
Version contained illegal character(s), allowed: abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789.-+

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)
• Migration from an old Vyatta component to vyos-1x, please link to related PR inside obsoleted component
• Other (please describe):

Related Task(s)

• https://vyos.dev/T6173

Related PR(s)

• T6173: Fix build error when "--version" value contains "/" #543

Component(s) name

Proposed changes

How to test

Checklist:

• 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

[c-po]

@Mergifyio backport sagitta

[mergify]

backport sagitta

✅ Backports have been created

• #554 T6173: validate allowed characters in ISO image name (backport #553) has been created for branch sagitta