Add workshops from Castiel2, ENCCS and Mimer AIF

[ashwinvis]

• Add CASTIEL2 2026 workshop
• Add Mimer AIF 2026 workshop

[github-actions]

Thank you!

Thank you for your pull request 😃

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🔍 Inspect the changes: https://github.com/carpentries-lab/deep-learning-intro/compare/md-outputs..md-outputs-PR-638

The following changes were observed in the rendered markdown documents:

 md5sum.txt   | 2 +-
 workshops.md | 5 ++++-
 2 files changed, 5 insertions(+), 2 deletions(-)

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⏱️ Updated at 2026-03-10 13:02:19 +0000

[carschno]

Looks good, thanks!