patch 9.0.1176: smithy files are not recognized

Problem:    smithy files are not recognized.
Solution:   Add a pattern for Smithy files. (Chris Kipp, closes #11804)
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index dc402dc..05ce070 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -528,6 +528,7 @@
     \ 'smarty': ['file.tpl'],
     \ 'smcl': ['file.hlp', 'file.ihlp', 'file.smcl'],
     \ 'smith': ['file.smt', 'file.smith'],
+    \ 'smithy': ['file.smithy'],
     \ 'sml': ['file.sml'],
     \ 'snobol4': ['file.sno', 'file.spt'],
     \ 'solidity': ['file.sol'],
diff --git a/src/version.c b/src/version.c
index 1876606..6a5f62d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -696,6 +696,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1176,
+/**/
     1175,
 /**/
     1174,