chore(deps): update actions/cache action to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/cache	action	major	v5 → v6

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Release Notes

actions/cache (actions/cache)

v6.1.0

Compare Source

What's Changed

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

Full Changelog: actions/cache@v6...v6.1.0

v6.0.0

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What's Changed

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

Full Changelog: actions/cache@v5...v6.0.0

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[what-the-diff]

PR Summary

• GitHub Action for Docker Layer Caching Updated
  The version of the GitHub Action we use for caching Docker layers has been upgraded from version 5 to version 6. This update will help our developer team to increase their work efficiency by making use of the latest improvements and feature additions brought in the new version.

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