swh-search: upgrade elasticsearch to 7.15.2

• specify the memory because with the new version of ES /java try to reserve as much memory as they can

Related to swh-search#3741 (closed)

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Migrated from D6685 (view on Phabricator)

Some references in the commit message have been migrated:

• T3741 is now swh-search#3741 (closed)

ok, thx

Fix the log message though... I assume it's "as they can*" and not "chan" ;)

Merge request was accepted

approved this merge request

fix a typo in the commit message

Merge request was merged

closed