patch 9.1.0506: filetype: .envrc & .prettierignore not recognized

Problem:  filetype: .envrc & .prettierignore not recognized
Solution: Detect '.envrc' as shell and '.prettierignore' as gitignore
          filetype (Tyler Miller)

Support ft detection for `.envrc` files used by direnv, and
`.prettierignore` files used by prettier.

closes: #15053
resolves: neovim/neovim#29405

Signed-off-by: Tyler Miller <tmillr@proton.me>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index 44d0214..9d40d8f 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    506,
+/**/
     505,
 /**/
     504,