Add major jump for 6.19->7.0

Signed-off-by: Konstantin Ryabitsev <konstantin@linuxfoundation.org>

pelicanconf.py

diff --git a/pelicanconf.py b/pelicanconf.py
index 7720b75..f0d3de5 100644
--- a/pelicanconf.py
+++ b/pelicanconf.py
@@ -46,6 +46,7 @@
                '4': '3.19',
                '5': '4.20',
                '6': '5.19',
+               '7': '6.19',
               }
 
 if 'GIT_REPOS' in os.environ.keys():