Updated intersection-tests to avoid hard-to-compare OpenGL z-buffer fighting

tests/regression/dumptest/intersection-tests-expected.txt

@@ -24,7 +24,7 @@
 	multmatrix([[1, 0, 0, 12], [0, 1, 0, 12], [0, 0, 1, 0], [0, 0, 0, 1]]) {
 		intersection() {
 			cube(size = [10, 10, 10], center = true);
-			multmatrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 7], [0, 0, 0, 1]]) {
+			multmatrix([[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 7.01], [0, 0, 0, 1]]) {
 				cylinder($fn = 0, $fa = 12, $fs = 2, h = 4, r1 = 4, r2 = 4, center = true);
 			}
 		}