patch 9.1.0355: filetype: flake.lock files are not recognized

Problem:  filetype: flake.lock files are not recognized
Solution: Detect 'flake.lock' as json filetype
          (Riley Bruins)

closes: #14589

Signed-off-by: Riley Bruins <ribru17@hotmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 23d2c80..df4217d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    355,
+/**/
     354,
 /**/
     353,