chore(deps-dev): bump @vuepress/plugin-pwa from 1.5.4 to 1.6.0

Bumps [@vuepress/plugin-pwa](https://github.com/vuejs/vuepress/tree/HEAD/packages/@vuepress/plugin-pwa) from 1.5.4 to 1.6.0.
- [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/v1.6.0/packages/@vuepress/plugin-pwa)

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

package.json

@@ -41,7 +41,7 @@
         "@babel/preset-env": "^7.4.5",
         "@vuepress/plugin-back-to-top": "1.5.4",
         "@vuepress/plugin-google-analytics": "1.6.0",
-        "@vuepress/plugin-pwa": "1.5.4",
+        "@vuepress/plugin-pwa": "1.6.0",
         "art-template": "4.13.2",
         "art-template-loader": "1.4.3",
         "autoprefixer": "^9.6.1",

yarn.lock

@@ -1254,12 +1254,12 @@
   dependencies:
     nprogress "^0.2.0"
 
-"@vuepress/plugin-pwa@1.5.4":
-  version "1.5.4"
-  resolved "https://registry.yarnpkg.com/@vuepress/plugin-pwa/-/plugin-pwa-1.5.4.tgz#97fe6d917f8815cdea7a8025e065c5a08480cd94"
-  integrity sha512-d3XWS0Zbae1c6IDU64BpIAIr78A7kTZTA7qkqk1H5sbO1SqlXMWQVMsiFZuraxiEY2uDc0N5j3Yr4Kkmo+0o0w==
+"@vuepress/plugin-pwa@1.6.0":
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/@vuepress/plugin-pwa/-/plugin-pwa-1.6.0.tgz#4de907286cf5afc6e8ced03625ec7ed66a7c2310"
+  integrity sha512-8Y3KnbEtprolA83AGBcRdzVs64+ZjQRGWaRWAeEZIsWl1gNuwcMT+voS69IpbqMUH7cw8v/KDQdIJkEjvOBe0w==
   dependencies:
-    "@vuepress/shared-utils" "1.5.4"
+    "@vuepress/shared-utils" "1.6.0"
     register-service-worker "^1.7.0"
     workbox-build "^4.3.1"
 
@@ -1291,10 +1291,10 @@
     toml "^3.0.0"
     upath "^1.1.0"
 
-"@vuepress/shared-utils@1.5.4":
-  version "1.5.4"
-  resolved "https://registry.yarnpkg.com/@vuepress/shared-utils/-/shared-utils-1.5.4.tgz#d2c8693b8cd354d3a13a76f8f4259335e5540099"
-  integrity sha512-HCeMPEAPjFN1Ongii0BUCI1iB4gBBiQ4PUgh7F4IGG8yBg4tMqWO4NHqCuDCuGEvK7lgHy8veto0SsSvdSKp3g==
+"@vuepress/shared-utils@1.6.0":
+  version "1.6.0"
+  resolved "https://registry.yarnpkg.com/@vuepress/shared-utils/-/shared-utils-1.6.0.tgz#8bf0c9c4e502bc6f10e70db3b236e816d8165631"
+  integrity sha512-+TMHgW7gmVY2lRX5qpPbsLkbxTBbzRo+Ar05tvEI0bAG0c6v2gWyQr3BchdbLyRJxrAVk530PABAjM8roDJ9bw==
   dependencies:
     chalk "^2.3.2"
     escape-html "^1.0.3"