chore(deps-dev): bump @vuepress/plugin-back-to-top from 1.2.0 to 1.3.0

Bumps [@vuepress/plugin-back-to-top](https://github.com/vuejs/vuepress/tree/HEAD/packages/@vuepress/plugin-back-to-top) from 1.2.0 to 1.3.0.
- [Release notes](https://github.com/vuejs/vuepress/releases)
- [Changelog](https://github.com/vuejs/vuepress/blob/master/CHANGELOG.md)
- [Commits](https://github.com/vuejs/vuepress/commits/v1.3.0/packages/@vuepress/plugin-back-to-top)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -39,7 +39,7 @@
     "devDependencies": {
         "@babel/core": "^7.6.0",
         "@babel/preset-env": "^7.4.5",
-        "@vuepress/plugin-back-to-top": "1.2.0",
+        "@vuepress/plugin-back-to-top": "1.3.0",
         "@vuepress/plugin-google-analytics": "1.2.0",
         "@vuepress/plugin-pwa": "1.3.0",
         "art-template": "4.13.2",

yarn.lock

@@ -1133,10 +1133,10 @@
   dependencies:
     lodash.debounce "^4.0.8"
 
-"@vuepress/plugin-back-to-top@1.2.0":
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/@vuepress/plugin-back-to-top/-/plugin-back-to-top-1.2.0.tgz#f6bb2f57317e94a6b0b6854719f3088481f2c0dd"
-  integrity sha512-QGFT5llXnqs/nrUmNql4jZuqo5VTKx/hsK9j1uNRdGBkyiqMs6h+brSpwTKtUqh/XwsCGn7FGPZLaYNkw7Oi8w==
+"@vuepress/plugin-back-to-top@1.3.0":
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/@vuepress/plugin-back-to-top/-/plugin-back-to-top-1.3.0.tgz#0193858287d6c18b30e31c4730ecaecef7c8d7b5"
+  integrity sha512-YuJEYaxPRAJScoqiq4uEcqdVt+vBOpdTDhepxtmN0vDRatvOqwJctwi5xqHcII2ziB7ddhOsibk8fhYwc/42ww==
   dependencies:
     lodash.debounce "^4.0.8"
 
@@ -1180,21 +1180,6 @@
   resolved "https://registry.yarnpkg.com/@vuepress/plugin-search/-/plugin-search-1.3.0.tgz#ec3619a2d70696f7f91575121f4b7409ba229d07"
   integrity sha512-buoQ6gQ2MLbLQ7Nhg5KJWPzKo7NtvdK/e6Fo1ig/kbOG5HyYKHCyqLjbQ/ZqT+fGbaSeEjH3DaVYTNx55GRX5A==
 
-"@vuepress/shared-utils@^1.2.0", "@vuepress/shared-utils@^1.3.0":
-  version "1.3.0"
-  resolved "https://registry.yarnpkg.com/@vuepress/shared-utils/-/shared-utils-1.3.0.tgz#2c9afccaed0bcdf4ceb1c02becdeac61da6dbec2"
-  integrity sha512-n1AFgt8SiMDdc5aIj5yOqS3E6+dAZ+9tPw6qf1mBiqvdZzwaUtlydvXqVkskrwUo18znLrUr55VYwubMOaxFnQ==
-  dependencies:
-    chalk "^2.3.2"
-    diacritics "^1.3.0"
-    escape-html "^1.0.3"
-    fs-extra "^7.0.1"
-    globby "^9.2.0"
-    gray-matter "^4.0.1"
-    hash-sum "^1.0.2"
-    semver "^6.0.0"
-    upath "^1.1.0"
-
 "@vuepress/shared-utils@^1.3.0":
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/@vuepress/shared-utils/-/shared-utils-1.3.0.tgz#2c9afccaed0bcdf4ceb1c02becdeac61da6dbec2"