Update to NimBLE 1.8.0

[nebkat]

Checklist

• Checked the issue tracker for similar issues to ensure this is not a duplicate.
• Described the feature in detail and justified the reason for the request.
• Provided specific use cases and examples.

Feature description

https://cwiki.apache.org/confluence/display/MYNEWT/RN-NimBLE-1.7.0
https://cwiki.apache.org/confluence/display/MYNEWT/RN-NimBLE-1.8.0