chore(deps): update dependency pytest-asyncio to ^0.26.0

[ibm-mend-app]

This PR contains the following updates:

Package	Change	Age	Confidence
pytest-asyncio (changelog)	^0.23.0 → ^0.26.0

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[ibm-mend-app]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

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The artifact failure details are included below:

File name: poetry.lock

Updating dependencies
Resolving dependencies...

The "poetry.dev-dependencies" section is deprecated and will be removed in a future version. Use "poetry.group.dev.dependencies" instead.

Because no versions of pytest-asyncio match >0.26.0,<0.27.0
 and pytest-asyncio (0.26.0) depends on pytest (>=8.2,<9), pytest-asyncio (>=0.26.0,<0.27.0) requires pytest (>=8.2,<9).
So, because skillsnetwork depends on both pytest (~7) and pytest-asyncio (^0.26.0), version solving failed.