civetweb: update submodule to support setting of http status

Signed-off-by: Yehuda Sadeh <yehuda@redhat.com>

diff --git a/src/civetweb b/src/civetweb
index 8a07012185851b8e8be180391866b5995c10ee93..275c42774f1074c9986195cd65b68b70a53130ef 160000 (submodule)
--- a/src/civetweb
+++ b/src/civetweb
@@ -1 +1 @@
-Subproject commit 8a07012185851b8e8be180391866b5995c10ee93
+Subproject commit 275c42774f1074c9986195cd65b68b70a53130ef