Fix/dx 4465 upgrade chalk to v5

[harshithad0703]

Summary

Upgrades chalk from ^4.1.2 to ^5.6.2 across the CLI monorepo. Chalk 5 is ESM-only while our build is CommonJS, so a small helper in @contentstack/cli-utilities loads chalk via dynamic import() and caches it; the main CLI preloads it in the init hook, and all packages use getChalk() from utilities instead of importing chalk directly.

Changes

• Dependencies: Bumped chalk to ^5.6.2 in 9 packages (contentstack, contentstack-utilities, contentstack-audit, contentstack-branches, contentstack-clone, contentstack-export, contentstack-import, contentstack-import-setup, contentstack-migration).
• contentstack-utilities: Added src/chalk.ts with loadChalk(), getChalk(), and ChalkInstance; exported from index.
• contentstack: Init hook (utils-init.ts) now async and calls await loadChalk() at startup.
• Source: Replaced all import chalk from 'chalk' and chalk. usage with getChalk() from @contentstack/cli-utilities in cli and cli-plugins. Template literals chalk`...` → (getChalk())`...` in migration error-helper.
• Types: In contentstack-audit, replaced deprecated ForegroundColor with ForegroundColorName from chalk.
• Docs: Added docs/chalk-upgrade-team-brief.md and docs/chalk-5-migration-guide.md for team alignment and migration of Launch/external plugins.

Notes

• Chalk 5 is ESM-only; the helper uses dynamic import('chalk') so CommonJS build works.
• Launch and external plugins should use getChalk() from utilities and follow docs/chalk-5-migration-guide.md; no helper or init in plugin repos.

[gitguardian]

⚠️ GitGuardian has uncovered 2 secrets following the scan of your pull request.

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🔎 Detected hardcoded secrets in your pull request

GitGuardian id	GitGuardian status	Secret	Commit	Filename
27413674	Triggered	Generic Password	f42ff37	pnpm-lock.yaml	View secret
27413675	Triggered	Generic Password	f42ff37	pnpm-lock.yaml	View secret

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[github-actions]

🔒 Security Scan Results

ℹ️ Note: Only vulnerabilities with available fixes (upgrades or patches) are counted toward thresholds.

Check Type	Count (with fixes)	Without fixes	Threshold	Result
🔴 Critical Severity	0	0	10	✅ Passed
🟠 High Severity	0	0	25	✅ Passed
🟡 Medium Severity	0	2	500	✅ Passed
🔵 Low Severity	0	0	1000	✅ Passed

⏱️ SLA Breach Summary

✅ No SLA breaches detected. All vulnerabilities are within acceptable time thresholds.

Severity	Breaches (with fixes)	Breaches (no fixes)	SLA Threshold (with/no fixes)	Status
🔴 Critical	0	0	15 / 30 days	✅ Passed
🟠 High	0	0	30 / 120 days	✅ Passed
🟡 Medium	0	0	90 / 365 days	✅ Passed
🔵 Low	0	0	180 / 365 days	✅ Passed

ℹ️ Vulnerabilities Without Available Fixes (Informational Only)

The following vulnerabilities were detected but do not have fixes available (no upgrade or patch). These are excluded from failure thresholds:

• Critical without fixes: 0
• High without fixes: 0
• Medium without fixes: 2
• Low without fixes: 0

✅ BUILD PASSED - All security checks passed