fix: resolve Snyk high vulnerabilities — bump deps + nanoid override

[cs-raj]

Summary

Resolves all 2 high-severity npm audit vulnerabilities. Root cause: nanoid <3.3.18 (GHSA-2v37-7h3g-55p8) pulled in transitively via postcss.

Changes

Direct dependency upgrades

Package	Before	After
@contentstack/delivery-sdk	^5.5.0	^5.6.0
@contentstack/live-preview-utils	^4.4.5	^4.5.0
nuxt	^4.5.1	^4.5.2
vue	^3.5.40	^3.5.41

Overrides added

Package	Version	Fixes
nanoid	3.3.18	GHSA-2v37-7h3g-55p8 (custom generators loop when size=0)

Package version bump

1.1.4 → 1.1.5

Vulnerability diff

Severity	Before	After	Fixed
Critical	0	0	—
High	2	0	✓ 2
Moderate	0	0	—
Low	0	0	—

Remaining issues

• Snyk SCA medium (44): All are LGPL-3.0 license findings from @img/sharp-libvips-* — not security vulnerabilities; require a licence review decision, not a dep change.
• Snyk Code (5): Static source-level findings (1 high hardcoded secret, 2 medium HTTP usage, 2 low hardcoded strings) — unaffected by dependency updates, need source fixes.

🤖 Generated with Claude Code

[snyk-io]

✅ Snyk checks have passed. No issues have been found so far.

Status	Scan Engine	Critical	High	Medium	Low	Total (0)
✅	Open Source Security	0	0	0	0	0 issues
✅	Licenses	0	0	0	0	0 issues
✅	Code Security	0	0	0	0	0 issues

💻 Catch issues earlier using the plugins for VS Code, JetBrains IDEs, Visual Studio, and Eclipse.

[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	44	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: 44
• Low without fixes: 0

✅ BUILD PASSED - All security checks passed