chore(deps): update all non-major dependencies to ^1.5.3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
@vuepress/plugin-google-analytics	devDependencies	patch	^1.5.2 -> ^1.5.3
vuepress	devDependencies	patch	^1.5.2 -> ^1.5.3

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Release Notes

vuejs/vuepress

### [`v1.5.3`](https://togithub.com/vuejs/vuepress/blob/master/CHANGELOG.md#​153-httpsgithubcomvuejsvuepresscomparev152v153-2020-08-05) [Compare Source](https://togithub.com/vuejs/vuepress/compare/v1.5.2...v1.5.3) ##### Bug Fixes - **$theme-default:** fix editLink for repos hosted on gitlab.com ([#​2523](https://togithub.com/vuejs/vuepress/issues/2523)) ([1c3967c](https://togithub.com/vuejs/vuepress/commit/1c3967c)) - add toml dependencyt to shared-utils ([b858a6e](https://togithub.com/vuejs/vuepress/commit/b858a6e)) - regular files should not be executable ([#​2535](https://togithub.com/vuejs/vuepress/issues/2535)) ([ffb8527](https://togithub.com/vuejs/vuepress/commit/ffb8527)) - **$theme-default:** improve last-updated text color contrast ([#​2282](https://togithub.com/vuejs/vuepress/issues/2282)) ([7ca9fbc](https://togithub.com/vuejs/vuepress/commit/7ca9fbc)) - allows no rel attribute on external links in the nav ([#​2338](https://togithub.com/vuejs/vuepress/issues/2338)) ([b343cd3](https://togithub.com/vuejs/vuepress/commit/b343cd3)) - **$core:** style loss under build for package that specifies `sideEffects: false` (fix [#​2350](https://togithub.com/vuejs/vuepress/issues/2350)) ([#​2471](https://togithub.com/vuejs/vuepress/issues/2471)) ([7e29900](https://togithub.com/vuejs/vuepress/commit/7e29900)) - **$markdown:** line highlighting not working correctly when importing code snippets ([#​2441](https://togithub.com/vuejs/vuepress/issues/2441)) ([d0f2e42](https://togithub.com/vuejs/vuepress/commit/d0f2e42)) ##### Features - **$theme-default:** add initial open group index option ([#​2408](https://togithub.com/vuejs/vuepress/issues/2408)) ([465ae40](https://togithub.com/vuejs/vuepress/commit/465ae40))

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