feat: update west.yaml to NCS v2.6.0

[MarkoSagadin]

Description

Going to latest NCS, nothing else here.

After-review steps

• I will merge PR by myself.

[style guidelines]: https://github.com/IRNAS/irnas-guidelines-docs/blob/main/docs/developer_guidelines.md

[MarkoSagadin]

• #23 👈
• #22
• #21
• #20
• main

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[MarkoSagadin]

Merge activity

• Mar 28, 10:53 AM EDT: @MarkoSagadin started a stack merge that includes this pull request via Graphite.
• Mar 28, 11:01 AM EDT: Graphite rebased this pull request as part of a merge.
• Mar 28, 11:02 AM EDT: @MarkoSagadin merged this pull request with Graphite.