Update dependency @actions/cache to v4.0.5

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@actions/cache (source)	4.0.3 -> 4.0.5

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Release Notes

actions/toolkit (@​actions/cache)

v4.0.5

• Reintroduce @​protobuf-ts/runtime-rpc as a runtime dependency #​2113

v4.0.4

⚠️ Faulty patch release. Upgrade to 4.0.5 instead.

• Optimized cache dependencies by moving @protobuf-ts/plugin to dev dependencies #​2106
• Improved cache service availability determination for different cache service versions (v1 and v2) #​2100
• Enhanced server error handling: 5xx HTTP errors are now logged as errors instead of warnings #​2099
• Fixed cache hit logging to properly distinguish between exact key matches and restore key matches #​2101

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