skeema / skeema / 14504514475

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MySQL 9.3 support

This commit marks MySQL 9.3 as a supported DB flavor. MySQL 9.3 is a short-
term-support Innovation server version, released yesterday (15 April 2025).

The only necessary change here relates to Docker instance creation, affecting
workspace=docker as well as integration test suites: in MySQL 9.3, the
previously-deprecated innodb-log-file-size global server variable has now been
removed. The newer innodb-redo-log-capacity variable must be used instead.

Since innodb-log-file-size no longer exists in MySQL 9.3+, but
innodb-redo-log-capacity only exists in MySQL 8.0.30+ (and never in MariaDB),
Skeema's Docker-related interactions now specify both variables using the
loose- prefix, which tells the server to ignore an unknown variable. MySQL
server versions 8.0.30 through 9.2.0 permit setting both variables at once,
in which case innodb-log-file-size is harmlessly ignored.

No other changes in functionality were necessary for MySQL 9.3 support in
Skeema.

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