patch 8.2.0307: Python 3 vim.eval not well tested

Problem:    Python 3 vim.eval not well tested.
Solution:   Add a test. (Dominique Pelle, closes #5680)
diff --git a/src/version.c b/src/version.c
index 49cdcc5..373eb16 100644
--- a/src/version.c
+++ b/src/version.c
@@ -739,6 +739,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    307,
+/**/
     306,
 /**/
     305,