build(deps): bump MU_BASECORE from `0c5d61b` to `15ed5b8` #62

Job	Run time
setup	13s
setup	13s
build (KodiakPkg) / setup	14s
build (KonaPkg) / setup	13s
build (PalimaPkg) / setup	13s
build (KailuaPkg) / setup	14s
build (RennellPkg) / setup	14s
build (SurfaceDuo1Pkg) / setup	15s
build (SurfaceDuo2Pkg) / setup	14s
build (PalimaPkg) / build (qcom-hdk8450) / build	7m 8s
build (KonaPkg) / build (qcom-mtp8250) / build	7m 9s
build (SurfaceDuo2Pkg) / build (qcom-hhg8350) / build	5m 7s
build (SurfaceDuo2Pkg) / build (qcom-mtp8350) / build	4m 55s
build (SurfaceDuo2Pkg) / build (qcom-qrd8350) / build	4m 54s
build (KodiakPkg) / build (qcom-qrd7325) / build	6m 5s
build (KailuaPkg) / build (qcom-qrd8550) / build	7m 0s
build (RennellPkg) / build (qcom-qrd7125) / build	5m 46s
build (SurfaceDuo1Pkg) / build (qcom-mtp8150) / build	5m 36s
build (SurfaceDuo1Pkg) / build (qcom-qrd8150) / build	5m 52s
package	0s
package	1s
build	1s
	1h 1m 37s

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