storage: bump pebble, add new blob rewrite cluster setting #153293
Merged
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Changes:
342d2e8bdb: add high-priority blob file rewrite compactionsfff7d3addb: fix MarkedForCompaction flaked86f6dabscripts: more improvements to stress.shRelease note: none.
Epic: none.
Add a new cluster setting for configuring high-priority blob file rewrite
compactions. One of these compactions is allowed to run ahead of a default
compaction if the amount of garbage exceeds the configured percentage.