fix(nuxt): compatibility with ^3.0.0-rc.9

[pi0]

Notes: https://github.com/nuxt/framework/releases/tag/v3.0.0-rc.9

1. Update compatibility range to include RC constraint (it is a breaking change of nuxt rc.9)

2. Upgrades nuxt/kit to rc.9 to hide deprecation error. Using a caret range ensures the kit gets updated always for backward compatibility.

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[codecov-commenter]

Codecov Report

Merging #1623 (f5063b9) into v2 (f9843eb) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##               v2    #1623   +/-   ##
=======================================
  Coverage   96.89%   96.89%           
=======================================
  Files          12       12           
  Lines        3159     3159           
  Branches      229      229           
=======================================
  Hits         3061     3061           
  Misses         95       95           
  Partials        3        3           

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