Update version to 11.1.0-rc1

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
diff --git a/VERSION b/VERSION
index 8a1e8e3..8436a1b 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-11.1.0-devel
+11.1.0-rc1