fix: starship instllation bug when using doas

[jeevithakannan2]

Type of Change

• New feature
• Bug fix
• Documentation update
• Refactoring
• Hotfix
• Security patch
• UI/UX improvement

Description

• Use escalation when running starship installing script.

Testing

• Works as expected

Issues / other PRs related

• Resolves Bash prompt setup starship not installing with doas #818

Checklist

• My code adheres to the coding and style guidelines of the project.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no errors/warnings/merge conflicts.