Sanitization support for the THEN and ELSE SQL logical operators

Backport of improved SQL query sanitization and some other improvements.

• Upgrade sql_lexer to v0.9.5. It adds sanitization support for the THEN and ELSE logical operators.
• Only ignore disk metrics that start with "loop", not all mounted disks that end with a number to report metrics for more disks.
• Rely on APPSIGNAL_RUNNING_IN_CONTAINER config option value before other environment factors to determine if the app is running in a container.
• Fix container detection for hosts running Docker itself.
• Add APPSIGNAL_STATSD_PORT config option.

See the Ruby gem 3.3.11 changelog for more information.