Migrate the "DMN" Getting Started Guide

[github-actions[bot]]

Acceptance Criteria (Required on creation)

• All Screenshots are up to date
• It works with the new release version
• Code Examples in the docs use the new release version
• Source Code in solution repository uses the new release version (version will be updated via Jenkins job on the official release date)
• The license header of java files is updated
• Update the NOTICE file if necessary (bump the year if it's the first release of the year)

Resources:

• Project repo: https://github.com/camunda/camunda-get-started-dmn
• Static docs repo (push your changes on the 7.22-release branch): https://github.com/camunda/camunda-docs-static/tree/7.22-release
• Adjustment guide

Hints

Links

• https://github.com/camunda/camunda-bpm-platform/issues/4279

Breakdown

### Tasks
- [ ] https://github.com/camunda/camunda-docs-static/pull/490

[psavidis]

Notes

• [x] The Code examples version use the new Release version (PR)
• [x] Updated Notice file date to 2024
• [x] The DMN Examples should be Adjusted to use the Jakarta namespace since they now point to Tomcat 10 and deploying them there does not work any more. (see commits on master)
  • [x] ServlerProcessApplication needs to be changed to JakartaServletProcessApplication (ref)
  • [x] javax.servlet:javax.servlet-api:3.0.1 has to be replaced by jakarta.servlet:jakarta.servlet-api:6.0.0 (ref)

[mboskamp]

👍 Code repository looks good.