Set the pbzip2 -m flag to the highest supported limit of 2000MB

[inqueue]

Set the maximum memory flag (-m) to a supported value supported by pbzip2. Fixes a warning when decompressing bz2 corpus files:

2026-01-26 20:00:17,22 ActorAddr-(T|:56141)/PID:34824 esrally.utils.io WARNING Failed to decompress [/Users/jbryan/.rally/benchmarks/data/github_archive0/documents-20211001-1k.json.bz2] with [['pbzip2', '-d', '-k', '-m10000', '-c', '/Users/jbryan/.rally/benchmarks/data/github_archive0/documents-20211001-1k.json.bz2']]. Error [b'pbzip2: *ERROR: Memory usage size Min: 1MB and Max: 2000MB!  Aborting...\n']. Falling back to standard library.

The upper limit according to pbzip2.cpp source is 2000MB.

3569                                         if ((maxMemory < 1000000) || (maxMemory > 2000000000))
3570                                         {
3571                                                 fprintf(stderr,"pbzip2: *ERROR: Memory usage size Min: 1MB and Max: 2000MB!  Aborting...\n");
3572                                                 return 1;
3573                                         } 

[gbanasiak]

LGTM

[fressi-elastic]

This closes issue #2030