patch 8.1.0627: Python cannot handle function name of script-local function

Problem:    Python cannot handle function name of script-local function.
Solution:   Use <SNR> instead of the special byte code. (Ozaki Kiichi, closes
            #3681)
diff --git a/src/version.c b/src/version.c
index 4d39dde..101d786 100644
--- a/src/version.c
+++ b/src/version.c
@@ -800,6 +800,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    627,
+/**/
     626,
 /**/
     625,