Update soong's go.mod to 1.15.6

Test: TH
Change-Id: I370e4a260cb6fb9fbd2d2da44964b51a339b90f5

parent 591920fc

go.mod

+1 −1

Original line number	Diff line number	Diff line
		@@ -8,4 +8,4 @@ replace github.com/golang/protobuf v0.0.0 => ../../external/golang-protobuf

		replace github.com/google/blueprint v0.0.0 => ../blueprint

		go 1.15
		go 1.15.6