Linux 6.4 compat: META

Update the META file to reflect compatibility with the 6.4 kernel.

Reviewed-by: George Melikov <[email protected]>
Reviewed-by: Rob Norris <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #15095

Author: behlendorf

META

@@ -6,5 +6,5 @@ Release:       1
 Release-Tags:  relext
 License:       CDDL
 Author:        OpenZFS
-Linux-Maximum: 6.3
+Linux-Maximum: 6.4
 Linux-Minimum: 3.10