Bump bockbuild to get mono/bockbuild#159

akoeplinger · akoeplinger · commit e9d3af508e46 · 2020-05-15T14:33:13.000+02:00
diff --git a/external/bockbuild b/external/bockbuild
@@ -1 +1 @@
-Subproject commit 9cd768f8ac7cffaf5150c01f87d24f007c430552
+Subproject commit b66a663fa4470ad4c8c08fa5750328c855668862
