Update dependency com.github.ben-manes.caffeine:caffeine to v2.9.3

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This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.github.ben-manes.caffeine:caffeine	2.8.5 -> 2.9.3

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Release Notes

ben-manes/caffeine

v2.9.3: 2.9.3

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Cache

• Fixed reference eviction when used with a broken executor (JDK-8274349)
• Reduced the entry overhead by 8 bytes when using weak or soft values
• Suppressed log warnings if a future is cancelled or times out (#​597)
• Fixed Map.entrySet.contains(o) to use reference equality
• Fixed early expiration of in-flight async loads (#​625)

JCache

• close() will now shutdown the executor and wait for in-flight loads to finish

v2.9.2: 2.9.2

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Cache

• Fixed reading an intermittent null weak/soft value during a concurrent write (#​568)
• Fixed extraneous eviction when concurrently removing a collected entry after a writer resurrects it with a new mapping (#​568)
• Fixed excessive retries of discarding an expired entry when the fixed duration period is extended, thereby resurrecting it (#​568)

v2.9.1: 2.9.1

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Cache

• Added cancellation of the next scheduled expiration cleanup when the cache becomes empty (#​542)
• Improved how variable expiration reorganizes the timer events (#​541)
• Added putIfAbsent optimistic fastpath (#​506)

v2.9.0: 2.9.0

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Cache

• Added Caffeine.evictionListener which is notified within the atomic operation when an entry is automatically removed
• Added triggering cache maintenance if an iterator observes an expired entry for more aggressive eviction (#​487)
• Improved eager eviction of an added or updated entry if it exceeds the cache's maximum weight
• Deprecated CacheWriter. Please use asMap computations or an eviction listener instead
• Added CacheStats.of(...) to allow for becoming a value-based class in a future release

v2.8.8: 2.8.8

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Cache

• Fixed NPE when running on the bootclasspath (#​481, https://github.com/google/error-prone/issues/1986)

v2.8.7: 2.8.7

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Cache

• Fixed asMap().keySet().toArray() to not return expired mappings (#​472)
• Added support for ISO-8601 durations to CaffeineSpec (#​466)
• Fixed put update optimization for variable expiration (#​478)

v2.8.6: 2.8.6

Compare Source

Cache

• Changed false sharing protection to comply with JDK 15's field layout (Java Objects Inside Out)
• Suppressed the removal listener notification when an AsyncCache future value resolves to null
• Improved the implementations of AsyncCache.synchronous().asMap() conditional methods
• Added Jandex index for assisting GraalVM AOT (https://github.com/quarkusio/quarkus/issues/10420)
• Deprecated UnsafeAccess and SingleConsumerQueue

JCache

• Changed to an OSGi Component to avoid coupling consumers to the provider (#​447)
• Added the ability to record native statistics (#​460)

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