patch 9.1.0273: filetype: keymap files are not recognized

Problem:  filetype: keymap files are not recognized
Solution: Detect '*.keymap' files as Device Tree Files
          (0xadk)

closes: #14434

Signed-off-by: 0xadk <0xadk@users.noreply.github.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 6d9a18c..da75e4b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    273,
+/**/
     272,
 /**/
     271,