chore(deps): update dependency nuxt to v2.6.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change	References
nuxt	devDependencies	minor	2.5.1 -> 2.6.1	source

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Release Notes

nuxt/nuxt.js

v2.6.1

Compare Source

Bug Fixes

• pin esm to 3.2.20 (#​5464) (53915c5)

v2.6.0

Compare Source

Bug Fixes

• revert node-externals disabling in dev mode (#​5452) (6ce99d2)
• webpack: prefer main over module field for server config (#​5446) (e155ea4)
• disable node-externals for dev mode (#​5414) (a5a1657)
• not override externals set by build.extend (#​5444) (1ae4333)
• build: disable loading babel.config.js by default (#​5365) (64fa424)
• builder: await for renderer to load resources (#​5341) (caf5198)
• cli: catch all possible errors thrown from proper-filelock (#​5347) (39bbe46)
• renderer: retry render if renderer is in loading or created state (#​5417) (8b99695)
• vue-app: prevent mounting page twice on redirect (#​5361) (2d73e8a)
• vue-renderer: add the csp hash if unsafe-inline hasn't been specified (#​5387) (97db6a4)
• add type definition for configuring forkTsChecker (2c1444d)
• fail in case of missing core-js dependency (#​5342) (439b914)
• memory leak in dev mode (#​5399) (04ddcac)
• SyntaxError Unexpected token export in importing babel runtime helper (#​5401) (3b85dd9)
• vue-app: decode uri in getlocation (#​5337) (77dcfe6)

Features

• babel-preset-app: support specifying core-js version (#​5411) (159123f)
• cli: add --quiet option to nuxt generate command (#​5357) (91f4eb0)
• cli: add internal _generate and _build options (#​5434) (516aea3)
• typescript: detect typescript based on tsconfig.json (#​5412) (6ffc5c5)
• vue-renderer: add csp meta tags (#​5354) (b978a37)

Reverts

• core: call ready to prevent breaking changes (#​5413) (001ba77)

2.5.1 (2019-03-21)

Bug Fixes

• apply default lock options before setting lock (#​5320) (7c24280)
• remove consola.debug for hooks (#​5318) (9ff01f9)
• ts: wrong export used in render.d.ts (#​5309) (e67b298)

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