patch 9.0.0956: terminal tests fail when using key with modifier

Problem:    Terminal tests fail when using key with modifier.
Solution:   Use the modifyOtherKeys encoding when using RunVimInTerminal().
diff --git a/src/version.c b/src/version.c
index 33f736a..a00a989 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    956,
+/**/
     955,
 /**/
     954,