fix(deps): update dependency nextra to v2.6.0 (#1806)

* fix(deps): update dependency nextra to v2.6.0

* chore(dependencies): updated changesets for modified dependencies

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: renovate[bot]