[PM-13213] Replace ${{ github.ref }} with GITHUB_REF in build.yml scripts

[AJGranowski]

🎟️ Tracking

N/a

📔 Objective

A simple defensive programming change. Data should be separated from code where possible to avoid command/code injection (CWE-78).

• Understanding the risk of script injections
• Default environment variables

This is not an exploitable vulnerability as far as I can tell, so this change is just a precautionary defensive measure.

📸 Screenshots

N/a

⏰ Reminders before review

• Contributor guidelines followed
• All formatters and local linters executed and passed
• Written new unit and / or integration tests where applicable
• Protected functional changes with optionality (feature flags)
• Used internationalization (i18n) for all UI strings
• CI builds passed
• Communicated to DevOps any deployment requirements
• Updated any necessary documentation (Confluence, contributing docs) or informed the documentation team

🦮 Reviewer guidelines

• 👍 (:+1:) or similar for great changes
• 📝 (:memo:) or ℹ️ (:information_source:) for notes or general info
• ❓ (:question:) for questions
• 🤔 (:thinking:) or 💭 (:thought_balloon:) for more open inquiry that's not quite a confirmed issue and could potentially benefit from discussion
• 🎨 (:art:) for suggestions / improvements
• ❌ (:x:) or ⚠️ (:warning:) for more significant problems or concerns needing attention
• 🌱 (:seedling:) or ♻️ (:recycle:) for future improvements or indications of technical debt
• ⛏ (:pick:) for minor or nitpick changes

[CLAassistant]

All committers have signed the CLA.

[CLAassistant]

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[bitwarden-bot]

Thank you for your contribution! We've added this to our internal Community PR board for review.
ID: PM-13213