patch 8.2.2392: fennel filetype not recognized

Problem:    Fennel filetype not recognized.
Solution:   Detect with pattern and hashbang. (Chinmay Dalal, closes #7729)
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index 4e6d433..2d667a2 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -174,6 +174,7 @@
     \ 'factor': ['file.factor'],
     \ 'falcon': ['file.fal'],
     \ 'fan': ['file.fan', 'file.fwt'],
+    \ 'fennel': ['file.fnl'],
     \ 'fetchmail': ['.fetchmailrc'],
     \ 'fgl': ['file.4gl', 'file.4gh', 'file.m4gl'],
     \ 'focexec': ['file.fex', 'file.focexec'],
@@ -639,6 +640,7 @@
       \         ['// -*- C++ -*-']],
       \ 'yaml': [['%YAML 1.2']],
       \ 'pascal': [['#!/path/instantfpc']],
+      \ 'fennel': [['#!/path/fennel']],
       \ }
 
 " Various forms of "env" optional arguments.
diff --git a/src/version.c b/src/version.c
index 6bcd074..c5fdf85 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    2392,
+/**/
     2391,
 /**/
     2390,