Update module github.com/elastic/go-freelru to v0.13.0

[elastic-renovate-prod]

This PR contains the following updates:

Package	Type	Update	Change
github.com/elastic/go-freelru	require	minor	v0.9.0 -> v0.13.0

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Release Notes

elastic/go-freelru (github.com/elastic/go-freelru)

v0.13.0

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• Fix addMetrics() of ShardedLRU
• Add stress test for ShardedLRU with lifetime
• Add a helping comment to the panic() call

v0.12.0

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• Add Metrics() and GetMetrics() to Cache interface

v0.11.0

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• Improve ShardedLRU in speed
• Use one contiguous block of memory for ShardedLRU
• Improve and extend benchmarks

v0.10.0

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• added linting via golangci-lint (use make lint)
• added Github CI for running the linter, the tests and the benchmarks

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