Update Steering Committee member

[sferenz]

Replaced Oliver Werth by Julia Köhlke for OFFIS, changed to alphabetical order.

Type of change (CHANGELOG.md)

Documentation updates

• Updated the OE Family Steering Committee

Workflow checklist

Automation

Closes #2331

PR-Assignee

• 🐙 Follow the workflow in
  CONTRIBUTING.md
• 📝 Update the
  CHANGELOG.md
• 📙 Update the documentation on
  mkdocs

Reviewer

• 🐙 Follow the
  Reviewer Guidelines
• 🐙 Provided feedback and show sufficient appreciation for the work done

[jh-RLI]

Looks good thanks @sferenz. We maintain a changelog in versions/changelogs/current.md. Please add a entry mentioning the update and this PR´s number.

Then we can merge it :)

[sferenz]

@jh-RLI I updated the changelog accordingly.

[jh-RLI]

Great. I approve this PR. The changes will be included in the next release, which will be available within the next 1–2 weeks.