Use job announcement as first matrix test

[wm75]

No description provided.

[github-actions]

Expecting value: line 2 column 1 (char 1)

[github-actions]

Invalid metadata in posts/2024-05-14_job_opening_and_matrix_test.md.
while scanning for the next token
found character '@' that cannot start any token
in "", line 6, column 7:
- @anikaerxleben:matrix.org
^

[github-actions]

---

File: posts/2024-05-14_job_opening_and_matrix_test.md
This is a preview that will be posted to matrix-eu-announce:

The Freiburg team of Galaxy Europe has an open Galaxy Admin position.
If you know somebody who might be interested, please forward them this link:

https://uni-freiburg.de/universitaet/jobs/00003737

P.S.: We are also testing a new github-based way of posting with this announcement so let's see how this works out 🫣

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[arash77]

@wm75 It failed to post to the matrix because in plugins.yml there were unconfigured social media.
So either we have to configure all social media first or just remove the unwanted social media from plugins.yml.