Upgrade Sparkey to 3.5.0

[spkrka]

Summary

• Upgrade Sparkey from 3.2.5 to 3.5.0
• Replace deprecated ThreadLocalSparkeyReader with Sparkey.open()

Changes from 3.2.5 to 3.5.0

3.5.0

• Java 22+ optimizations with MemorySegment-based implementations for zero-copy I/O
• Performance improvements for uncompressed files (up to 38% faster with 8 threads)
• Support for values larger than 2GB on Java 22+
• VLQ optimization with inlined reads in uncompressed hash lookups
• Type safety improvements with covariant return types

3.4.0

• Performance optimizations with readFullyCompare() method (11-17% improvement in high-concurrency workloads)
• SIMD optimizations for byte array comparisons on Java 9+
• PooledSparkeyReader improvements with lock-free atomic operations
• Fixed thread-safety bug in PooledSparkeyReader.getAsEntry()

3.3.0

• Default implementation change: Sparkey.open() now returns PooledSparkeyReader instead of ThreadLocalSparkeyReader
• PooledSparkeyReader provides better memory safety for Java 21+ applications using virtual threads
• ThreadLocalSparkeyReader is deprecated but available via Sparkey.openThreadLocalReader()

Code changes

• Updated build.sbt: sparkeyVersion from 3.2.5 to 3.5.0
• Updated SparkeyUri.scala: replaced explicit ThreadLocalSparkeyReader usage with Sparkey.open()
• Updated import from com.spotify.sparkey.extra.ThreadLocalSparkeyReader to com.spotify.sparkey.Sparkey

Test plan

• Compilation successful

🤖 Generated with Claude Code

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 61.48%. Comparing base (88294b9) to head (e797b81).
⚠️ Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #5827      +/-   ##
==========================================
- Coverage   61.49%   61.48%   -0.01%     
==========================================
  Files         317      317              
  Lines       11650    11650              
  Branches      818      818              
==========================================
- Hits         7164     7163       -1     
- Misses       4486     4487       +1     

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