deps: update BPMN modeling libraries

[Skaiir]

Proposed Changes

Updates BPMN modeling dependencies, adding support for #4450.

Closes #4450
Closes #4140
Closes #3534

Validation (for task definition priority)

• Add a user task
• Priority field should be available under assignment
• Should be feel optional
• Should take any integer between 0 & 100, or a feel expression, and should have corresponding linting rules + properties panel errors when not
• Should be unsupported pre 8.6, and have corresponding linting rules
• Should have a tooltip explaining more or less how it works
• Should set extension property priorityDefinition, attribute priority
• Should clean the extension property on clearing the priority

Checklist

To ensure you provided everything we need to look at your PR:

• Brief textual description of the changes present
• Visual demo attached
• Steps to try out present, i.e. using the @bpmn-io/sr tool
• Related issue linked via Closes {LINK_TO_ISSUE} or Related to {LINK_TO_ISSUE}

[barmac]

Not sure if we can tell the linked issue will be closed via this PR given bpmn-io/bpmn-js-properties-panel#1073 is still open. WDYT?

[Skaiir]

@barmac Since we are not concerning ourselves with documentation for now due to prios, we can still close it and deal with it independently I believe.

[Skaiir]

But if you prefer, we can keep the tracking issue. For me it won't make a difference I'll just unassign myself from the tracking :).

[nikku]

@Skaiir I'd just like you to connect the follow-ups to whatever epic you work on. From our end it is fine to incrementally ship things, hence 👍 for closing the issue, with some follow-ups to do.

[nikku]

You can enter strings in the field, which I'm not sure is expected:

I cannot see any validation (not supported pre-8.6).

---

I propose we take this the usual route, integrate a working thing in camunda-bpmn-js, and take it from there.

[nikku]

Package published as https://github.com/camunda/camunda-bpmn-js/releases/tag/v4.18.0.

[nikku]

This now bumps all modeling dependencies, consistently via camunda-bpmn-js, and includes the latest version of linting, too.

@Skaiir I strongly suggest you to get your DEV setup for the modeler sorted, so you can efficiently test this locally. We're not the ones to do primary user testing 🙈, but we want you to verify the definition of done yourself, before you move the PR to needs review.