patch 9.1.1318: tests: test_format fails

Problem:  tests: test_format fails (after 9.1.1314).
Solution: Increase the string size.  Add missing test_format.res in
          NEW_TESTS_RES (zeertzjq).

closes: #17144

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/testdir/test_format.vim b/src/testdir/test_format.vim
index 785348b..c261288 100644
--- a/src/testdir/test_format.vim
+++ b/src/testdir/test_format.vim
@@ -334,13 +334,13 @@
   call v9.CheckLegacyAndVim9Failure(["call printf('%1$*123456789$.*987654321$d', 5)"], "E1510:")
   call v9.CheckLegacyAndVim9Failure(["call printf('%123456789$*1$.*987654321$d', 5)"], "E1510:")
 
-  call v9.CheckLegacyAndVim9Failure(["call printf('%1$*2$.*1$d', 5, 9999)"], "E1510:")
-  call v9.CheckLegacyAndVim9Failure(["call printf('%1$*1$.*2$d', 5, 9999)"], "E1510:")
-  call v9.CheckLegacyAndVim9Failure(["call printf('%2$*3$.*1$d', 5, 9123, 9321)"], "E1510:")
-  call v9.CheckLegacyAndVim9Failure(["call printf('%1$*2$.*3$d', 5, 9123, 9321)"], "E1510:")
-  call v9.CheckLegacyAndVim9Failure(["call printf('%2$*1$.*3$d', 5, 9123, 9312)"], "E1510:")
+  call v9.CheckLegacyAndVim9Failure(["call printf('%1$*2$.*1$d', 5, 9999999)"], "E1510:")
+  call v9.CheckLegacyAndVim9Failure(["call printf('%1$*1$.*2$d', 5, 9999999)"], "E1510:")
+  call v9.CheckLegacyAndVim9Failure(["call printf('%2$*3$.*1$d', 5, 9999123, 9999321)"], "E1510:")
+  call v9.CheckLegacyAndVim9Failure(["call printf('%1$*2$.*3$d', 5, 9999123, 9999321)"], "E1510:")
+  call v9.CheckLegacyAndVim9Failure(["call printf('%2$*1$.*3$d', 5, 9999123, 9999312)"], "E1510:")
 
-  call v9.CheckLegacyAndVim9Failure(["call printf('%1$*2$d', 5, 9999)"], "E1510:")
+  call v9.CheckLegacyAndVim9Failure(["call printf('%1$*2$d', 5, 9999999)"], "E1510:")
 endfunc
 
 func Test_printf_pos_64bit()