Bump Java.Interop to fix breakage caused by cecil bump

radekdoulik · grendello · commit a03df0484c8f · 2019-08-14T08:03:34.000+02:00
...which is now reverted on JI/master.
diff --git a/external/Java.Interop b/external/Java.Interop
@@ -1 +1 @@
-Subproject commit 285a32b33a57b3247c76b63bf3dfd9ba5b01b7d9
+Subproject commit 2abfc1e06a641a095acebe518f8f684efb36b3f1
