chore(deps): upgradde vue to 2.7.0

[pi0]

Types of changes

• Bug fix (a non-breaking change which fixes an issue)
• New feature (a non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Description

Any new Nuxt 2 installation already uses vue 2.7.0 (^2.6.12 covers 2.7.0) this PR updates dependency to ensure tests are passing.

We also plan to use 2.7 for native composition-api support via nuxt/bridge (nuxt/bridge#370)

Release notes: https://blog.vuejs.org/posts/vue-2-7-naruto.html

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly. (PR: #)
• I have added tests to cover my changes (if not applicable, please state why)
• All new and existing tests are passing.

[codecov-commenter]

Codecov Report

Merging #10548 (7ceb646) into dev (123206c) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev   #10548   +/-   ##
=======================================
  Coverage   65.19%   65.19%           
=======================================
  Files          94       94           
  Lines        4155     4155           
  Branches     1172     1172           
=======================================
  Hits         2709     2709           
  Misses       1167     1167           
  Partials      279      279           

Flag	Coverage Δ
unittests	65.19% <ø> (ø)

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[pi0]

Updated by #10524