feat(ODE-toolbox): add version 2.5.11

Summary

Package	py‎-odetoolbox‎
Version added	2.5.11
Contact point	@chlinssen
KG entry

Checks

• Software Follows EBRAINS Software Quality Guidelines and reaches level:

  fill the SQ-Checklist.pdf and attach below

• Current maintainer is listed first in package.py
• No pinned dependency versions
• Post-installation tests are defined