Upgrade all dependencies to latest versions

[rfinkers]

This commit upgrades all project dependencies and Java version to improve security, performance, and maintainability:

Dependencies upgraded:

• Struts2: 2.5.20 → 2.5.33 (critical security fixes)
• SQLite JDBC: 3.25.2 → 3.45.0.0
• Apache POI: 3.17 → 5.2.5
• JUnit: 4.12 → 4.13.2
• JavaMail API: 1.6.1 → 1.6.2
• Apache Commons Math: 2.2 → 3.6.1 (updated artifact to commons-math3)

Maven plugins upgraded:

• maven-compiler-plugin: 3.8.0 → 3.12.1
• maven-war-plugin: 3.2.2 → 3.4.0
• maven-dependency-plugin: 3.1.1 → 3.6.1

Java version: 1.8 → 11

Code changes:

• Updated Commons Math import in PredictorResponseXYScatterPlot.java to use math3 package

Generated with Claude Code