Update mysql

Changes:

- https://github.com/docker-library/mysql/commit/3e9610e: Merge pull request https://github.com/docker-library/mysql/pull/637 from infosiftr/xz-files
- https://github.com/docker-library/mysql/commit/c4d5853: Add .sql.xz support to docker-entrypoint-initdb.d

library/mysql

@@ -5,13 +5,13 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
 GitRepo: https://github.com/docker-library/mysql.git
 
 Tags: 8.0.19, 8.0, 8, latest
-GitCommit: 3dfa7a3c038f342b9dec09fa85247bef69ae2349
+GitCommit: c4d585301408223c27b024ce442b9bcebf0b1855
 Directory: 8.0
 
 Tags: 5.7.29, 5.7, 5
-GitCommit: 6952c5d5a9889311157362c528d65dc2e37ff660
+GitCommit: c4d585301408223c27b024ce442b9bcebf0b1855
 Directory: 5.7
 
 Tags: 5.6.47, 5.6
-GitCommit: 4ee6cf34697d33b2f71144ef55f96867b71220d5
+GitCommit: c4d585301408223c27b024ce442b9bcebf0b1855
 Directory: 5.6