submodule--helper: teach config subcommand --unset

diff --git a/GIT-VERSION-GEN b/GIT-VERSION-GEN
index 5aafb91946a1708d566f7f6f86e6a92b727a7342..1d4886b37223324f78b00c5f7ab0847b85aabce0 100755 (executable)
--- a/GIT-VERSION-GEN
+++ b/GIT-VERSION-GEN
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 GVF=GIT-VERSION-FILE
-DEF_VER=v2.20.0-rc0
+DEF_VER=v2.21.0-rc0
 
 LF='
 '