patch 9.1.0248: filetype: yarn lock files are not recognized

Problem:  filetype: yarn lock files are not recognized
Solution: Detect 'yarn.lock' files as yaml
          (Wu, Zhenyu)

closes: #14369

Signed-off-by: Wu, Zhenyu <wuzhenyu@ustc.edu>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 47d8e14..7eb84b7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    248,
+/**/
     247,
 /**/
     246,