chore(deps): bump actions/cache from 5.1.0 to 6.1.0

Sourced from actions/cache's releases.

<h2>v6.1.0</h2> <h2>What's Changed</h2>

• Bump @​actions/cache to v6.1.0 - handle read-only cache access by @​jasongin in actions/cache#1768

Full Changelog: https://github.com/actions/cache/compare/v6...v6.1.0

<h2>v6.0.0</h2> <h2>What's Changed</h2>

• Update packages, migrate to ESM by @​Samirat in actions/cache#1760

Full Changelog: https://github.com/actions/cache/compare/v5...v6.0.0

Sourced from actions/cache's changelog.

<h3>6.1.0</h3>

• Bump @actions/cache to v6.1.0 to pick up actions/toolkit#2435 Handle cache write error due to read-only token
• Switch redundant &quot;Cache save failed&quot; warning to debug log in save-only

<h3>6.0.0</h3>

• Updated @actions/cache to ^6.0.1, @actions/core to ^3.0.1, @actions/exec to ^3.0.0, @actions/io to ^3.0.2
• Migrated to ESM module system
• Upgraded Jest to v30 and test infrastructure to be ESM compatible

<h3>5.0.4</h3>

• Bump minimatch to v3.1.5 (fixes ReDoS via globstar patterns)
• Bump undici to v6.24.1 (WebSocket decompression bomb protection, header validation fixes)
• Bump fast-xml-parser to v5.5.6

<h3>5.0.3</h3>

• Bump @actions/cache to v5.0.5 (Resolves: https://github.com/actions/cache/security/dependabot/33)
• Bump @actions/core to v2.0.3

<h3>5.0.2</h3>

• Bump @actions/cache to v5.0.3 #1692

<h3>5.0.1</h3>

• Update @azure/storage-blob to ^12.29.1 via @actions/cache@5.0.1 #1685

<h3>5.0.0</h3>

[!IMPORTANT] actions/cache@v5 runs on the Node.js 24 runtime and requires a minimum Actions Runner version of 2.327.1. If you are using self-hosted runners, ensure they are updated before upgrading.

<h3>4.3.0</h3>

• Bump @actions/cache to v4.1.0

<h3>4.2.4</h3>

• Bump @actions/cache to v4.0.5

<h3>4.2.3</h3>

• Bump @actions/cache to v4.0.3 (obfuscates SAS token in debug logs for cache entries)

<h3>4.2.2</h3>

... (truncated)

• 55cc834 Merge pull request #1768 from jasongin/readonly-cache
• d8cd72f Bump @​actions/cache to v6.1.0 - handle cache write error due to RO token
• 2c8a9bd Merge pull request #1760 from actions/samirat/esm_migration_and_package_update
• e9b91fd Prettier fixes
• e4884b8 Rebuild dist
• 10baf01 Fixed licenses
• e39b386 Fix test mock return order
• b692820 PR feedback
• 6074912 Rebuild dist bundles as ESM to match type:module
• 5a912e8 Fix lint and jest issues
• Additional commits viewable in compare view

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