patch 8.1.2007: no test for what 8.1.1926 fixes

Problem:    No test for what 8.1.1926 fixes.
Solution:   Add a test case.
diff --git a/src/version.c b/src/version.c
index 4f9e346..f0fe059 100644
--- a/src/version.c
+++ b/src/version.c
@@ -758,6 +758,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2007,
+/**/
     2006,
 /**/
     2005,