Increase source controller memory allocation

General MR

Summary

Bumps up the memory for the source controller to handle larger git repos.

Closes https://repo1.dso.mil/platform-one/big-bang/bigbang/-/issues/1318

changed milestone to %1.45.0

added flux statusreview labels

assigned to @micah.nagel

approved this merge request

approved this merge request

merged

mentioned in commit 340ebe81