vim-patch:9.0.1467: Jenkinsfiles are not recognized as groovy (#23195)

Problem:    Jenkinsfiles are not recognized as groovy.
Solution:   Add a pattern for Jenkinsfiles. (closes vim/vim#12236)

142ffb024d

Co-authored-by: dundargoc <gocdundar@gmail.com>

runtime/lua/vim/filetype.lua

@@ -1469,6 +1469,7 @@ local filename = {
   ['.gprc'] = 'gp',
   ['/.gnupg/gpg.conf'] = 'gpg',
   ['/.gnupg/options'] = 'gpg',
+  ['Jenkinsfile'] = 'groovy',
   ['/var/backups/gshadow.bak'] = 'group',
   ['/etc/gshadow'] = 'group',
   ['/etc/group-'] = 'group',

test/old/testdir/test_filetype.vim

@@ -248,7 +248,7 @@ let s:filename_checks = {
     \ 'grads': ['file.gs'],
     \ 'graphql': ['file.graphql', 'file.graphqls', 'file.gql'],
     \ 'gretl': ['file.gretl'],
-    \ 'groovy': ['file.gradle', 'file.groovy'],
+    \ 'groovy': ['file.gradle', 'file.groovy', 'Jenkinsfile'],
     \ 'group': ['any/etc/group', 'any/etc/group-', 'any/etc/group.edit', 'any/etc/gshadow', 'any/etc/gshadow-', 'any/etc/gshadow.edit', 'any/var/backups/group.bak', 'any/var/backups/gshadow.bak', '/etc/group', '/etc/group-', '/etc/group.edit', '/etc/gshadow', '/etc/gshadow-', '/etc/gshadow.edit', '/var/backups/group.bak', '/var/backups/gshadow.bak'],
     \ 'grub': ['/boot/grub/menu.lst', '/boot/grub/grub.conf', '/etc/grub.conf', 'any/boot/grub/grub.conf', 'any/boot/grub/menu.lst', 'any/etc/grub.conf'],
     \ 'gsp': ['file.gsp'],