patch 9.1.0266: filetype: earthfile files are not recognized

Problem:  filetype: earthfile files are not recognized
Solution: Detect 'Earthfile' as earthfile
          (Gaëtan Lehmann)

closes: #14408

Signed-off-by: Gaëtan Lehmann <gaetan.lehmann@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index 0683fef..3ee1cd7 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -220,6 +220,7 @@
     dylan: ['file.dylan'],
     dylanintr: ['file.intr'],
     dylanlid: ['file.lid'],
+    earthfile: ['Earthfile'],
     ecd: ['file.ecd'],
     edif: ['file.edf', 'file.edif', 'file.edo'],
     editorconfig: ['.editorconfig'],
diff --git a/src/version.c b/src/version.c
index b24db2f..f1792f7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    266,
+/**/
     265,
 /**/
     264,