patch 8.1.1187: cannot recognize Pipfile

Problem:    Cannot recognize Pipfile.
Solution:   Use existing filetypes. (Charles Ross, closes #4280)
diff --git a/src/testdir/test_filetype.vim b/src/testdir/test_filetype.vim
index fe6a0a1..0783d3e 100644
--- a/src/testdir/test_filetype.vim
+++ b/src/testdir/test_filetype.vim
@@ -102,7 +102,7 @@
     \ 'coco': ['file.atg'],
     \ 'conaryrecipe': ['file.recipe'],
     \ 'conf': ['auto.master'],
-    \ 'config': ['configure.in', 'configure.ac'],
+    \ 'config': ['configure.in', 'configure.ac', 'Pipfile'],
     \ 'context': ['tex/context/any/file.tex', 'file.mkii', 'file.mkiv', 'file.mkvi'],
     \ 'cpp': ['file.cxx', 'file.c++', 'file.hh', 'file.hxx', 'file.hpp', 'file.ipp', 'file.moc', 'file.tcc', 'file.inl', 'file.tlh'],
     \ 'crm': ['file.crm'],
@@ -223,7 +223,7 @@
     \ 'jgraph': ['file.jgr'],
     \ 'jovial': ['file.jov', 'file.j73', 'file.jovial'],
     \ 'jproperties': ['file.properties', 'file.properties_xx', 'file.properties_xx_xx'],
-    \ 'json': ['file.json', 'file.jsonp', 'file.webmanifest'],
+    \ 'json': ['file.json', 'file.jsonp', 'file.webmanifest', 'Pipfile.lock'],
     \ 'jsp': ['file.jsp'],
     \ 'kconfig': ['Kconfig', 'Kconfig.debug'],
     \ 'kivy': ['file.kv'],
diff --git a/src/version.c b/src/version.c
index 0b9a5df..f9b53b0 100644
--- a/src/version.c
+++ b/src/version.c
@@ -772,6 +772,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1187,
+/**/
     1186,
 /**/
     1185,