MDEV-16142: Update the InnoDB version number to 5.7.22

Author: dr-m

mysql-test/suite/sys_vars/r/sysvars_innodb.result

@@ -3046,7 +3046,7 @@ READ_ONLY	NO
 COMMAND_LINE_ARGUMENT	OPTIONAL
 VARIABLE_NAME	INNODB_VERSION
 SESSION_VALUE	NULL
-GLOBAL_VALUE	5.7.21
+GLOBAL_VALUE	5.7.22
 GLOBAL_VALUE_ORIGIN	COMPILE-TIME
 DEFAULT_VALUE	NULL
 VARIABLE_SCOPE	GLOBAL

storage/innobase/include/univ.i

@@ -41,7 +41,7 @@ Created 1/20/1994 Heikki Tuuri
 
 #define INNODB_VERSION_MAJOR	5
 #define INNODB_VERSION_MINOR	7
-#define INNODB_VERSION_BUGFIX	21
+#define INNODB_VERSION_BUGFIX	22
 
 /* The following is the InnoDB version as shown in
 SELECT plugin_version FROM information_schema.plugins;