fix: Bump Hibernate to 5.6.7.Final, use only named parameters in queries

[barbeau]

Summary:

This PR bumps the Hibernate version to 5.6.7.Final. However, errors are encountered:

javax.servlet.ServletException: java.lang.IllegalArgumentException: Could not locate ordinal parameter [0], expecting one of [1, 2, 3]
...

Full stack trace is detailed in #139.

EDIT - Problems seem to be solved by using named parameters only in queries - see #140 (comment).

Closes #139.

Expected behavior:

Everything should work as it previously did on the main branch - website should show validation results. However, the website currently appears blank.

Please make sure these boxes are checked before submitting your pull request - thanks!

• Run the unit tests with mvn test to make sure you didn't break anything
• Format the title like "feat: {new feature short description}" or "fix: {describe what was fixed}". Title must follow the Conventional Commit Specification (https://www.conventionalcommits.org/en/v1.0.0/).
• Linked all relevant issues
• Include screenshot(s) showing how this pull request works and fixes the issue(s)

[barbeau]

There were two issues, apparently starting with Hibernate 5.4:

1. Ordinal positional parameters (i.e., with numbers) must start at 1. Ours started at 0, and also just had a ? instead of a number too like ?1 in the query itself. See https://stackoverflow.com/questions/68619839/why-does-could-not-locate-ordinal-parameter-0-expecting-one-of-happen.
2. If we update the ordinal parameters to start at 1 and the queries to add numbers after ?, we get another error "org.hibernate.engine.query.ParameterRecognitionException: Mixed parameter strategies - use just one of named, positional or JPA-ordinal strategy". See https://docs.jboss.org/hibernate/orm/5.4/userguide/html_single/Hibernate_User_Guide.html#jpql-api.

So, in this patch we update everything to use named parameters instead of a mix of ordinal and named parameters, which appears to solve both issues.

I tested on Windows 10 with JDK 17.0.2 and the webapp seems to work ok now, and the test all pass.

[maximearmstrong]

Perfect, thank you @barbeau !