Update mysql

Changes:

- https://github.com/docker-library/mysql/commit/aaecc90: Merge pull request https://github.com/docker-library/mysql/pull/724 from infosiftr/less-flush
- https://github.com/docker-library/mysql/commit/1a25a09: no flush privs needed after grant/create user

library/mysql

@@ -5,13 +5,13 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
 GitRepo: https://github.com/docker-library/mysql.git
 
 Tags: 8.0.22, 8.0, 8, latest
-GitCommit: 234befee1071c0cd292f2392895d13ee94ce2a02
+GitCommit: 1a25a09159a3d7b6b5b8ad0e6c7eb53504b3aab5
 Directory: 8.0
 
 Tags: 5.7.32, 5.7, 5
-GitCommit: c0dc027ceb83f9daba6b8f5fbc69dac33feed174
+GitCommit: 1a25a09159a3d7b6b5b8ad0e6c7eb53504b3aab5
 Directory: 5.7
 
 Tags: 5.6.50, 5.6
-GitCommit: 37834b44af39889eeba57452a404f12b5882a408
+GitCommit: 1a25a09159a3d7b6b5b8ad0e6c7eb53504b3aab5
 Directory: 5.6