refactor: Modernize semantic-release config for v25 compatibility

[Copilot]

The semantic-release dependency upgrades (v17→v25) require configuration updates to match modern patterns used across Parse projects.

Changes

• Safer imports: Use destructured imports (const { readFile } vs const fs)
• Defensive branch handling: Add optional chaining to prevent crashes when GITHUB_REF is undefined
• Standardized breaking change detection: Use only ['BREAKING CHANGE'] in noteKeywords (consistent with parse-server)
• Fixed template escaping: Escape $ in releasedLabels template string (\${nextRelease.channel})
• Simplified template loading: Remove redundant readFile wrapper function

Example

// Before
const branch = ref.split('/').pop();  // Crashes if ref is undefined

// After  
const branch = ref?.split('/')?.pop() || '(current branch could not be determined)';

Config validated to load successfully with semantic-release v25.

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[parseplatformorg]

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