Some 20x4 INSAR_ISCE_MULTI_BURST jobs are running out of memory

[jtherrmann]

Jira: https://asfdaac.atlassian.net/browse/TOOL-3966

Note: The above link is accessible only to members of ASF.

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@asjohnston-asf reports via Mattermost that a user's jobs (INSAR_ISCE_MULTI_BURST, 20x4, 13 bursts) are running out of memory. We should decide if it's worth bumping the memory override and credit cost for such jobs.