patch 9.1.0737: tests: screendump tests may require a bit more time

Problem:  Asynchronous terminal jobs occassionally require more time
          to complete and redraw the window
Solution: increase the sleep value from 10 to 50 milliseconds
          (Aliaksei Budavei)

closes: #15695

Signed-off-by: Aliaksei Budavei <0x000c70@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/testdir/screendump.vim

@@ -80,7 +80,7 @@ func VerifyScreenDump(buf, filename, options, ...)
   let i = 0
   while 1
     " leave some time for updating the original window
-    sleep 10m
+    sleep 50m
     call delete(testfile)
     call term_dumpwrite(a:buf, testfile, a:options)
     let testdump = ReadAndFilter(testfile, filter)

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    737,
 /**/
     736,
 /**/