Upgrading to Wicket 10, Spring 6 and related Jakarta EE specs

[ilgrosso]

Following #740
Before merging this request to master branch, the master branch shall be copied as the new wicket-9.x branch.

Still draft because:

1. mvn clean install -DskipTests works fine, but test results were not checked yet
2. replacement for Wicket class removals (in particular ModalWindow) are to be checked

[martin-g]

I will create branch wicket-9.x from master and leave master for 10.x

[martin-g]

Done: https://github.com/wicketstuff/core/tree/wicket-9.x

[ilgrosso]

@martin-g the branch should be changed in https://github.com/wicketstuff/core/blob/wicket-9.x/.github/workflows/ci.yml

[martin-g]

@martin-g the branch should be changed in https://github.com/wicketstuff/core/blob/wicket-9.x/.github/workflows/ci.yml

Fixed it! Thanks!

[ilgrosso]

All tests are passing locally but GitHub Actions goes error

Error:  org.wicketstuff.pageserializer.kryo2.KryoSerializerTest.homepageRendersSuccessfully  Time elapsed: 0.114 s  <<< FAILURE!
org.opentest4j.AssertionFailedError: The produced data length is not correct! ==> expected: <777> but was: <776>

See https://github.com/wicketstuff/core/actions/runs/3847139651/jobs/6553240311#step:5:10121

[martin-g]

This is a known issue.
I'd just remove this assertion. It is too unstable.

[ilgrosso]

@martin-g now that build is green, I'd ask you to review this PR, especially for the changes due to Wicket upgrade.

In particular ModalWindow -> ModalDialog since it seems that the latter has way less methods than the former, and I've simply removed the calls to missing methods: please advice if there is a better way, thanks.

[martin-g]

LGTM!

About the ModalWindow->ModalDialog changes - we can always fix them later if there are issues!

[ilgrosso]

Thank you @martin-g !

[ilgrosso]

It looks there is some issue with OSS SNAPSHOT deployment about credentials

[martin-g]

I'm uploading -SNAPSHOT from my machine...

[ilgrosso]

Ah, thank you

[martin-g]

Forgot to mention that the upload/deploy is done!

[solomax]

great job @ilgrosso!
Thanks a lot :)))

[ilgrosso]

@solomax my pleasure