GMF Runtime 1.16.8

Update site: https://download.eclipse.org/modeling/gmp/gmf-runtime/updates/releases/R202512020858/

This version is part of Eclipse 2026-06.

What's Changed

• [releng] Remove source features from the main SDK feature by @pcdavid in #98
• [doc] Add URL for v1.16.7 in the README by @pcdavid in #100
• Issue#97 ConcurrentModificationException in GMFResourceModificationMa… by @eobrienPilz in #99
• Releng updates by @pcdavid in #101
• [releng] Bump version to 1.16.8 by @pcdavid in #102

New Contributors

• @eobrienPilz made their first contribution in #99

Full Changelog: v1.16.7...v1.16.8