chore(deps-dev): bump @vuepress/plugin-pwa from 1.5.3 to 1.5.4

Bumps [@vuepress/plugin-pwa](https://github.com/vuejs/vuepress/tree/HEAD/packages/@vuepress/plugin-pwa) from 1.5.3 to 1.5.4.
- [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/v1.5.4/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": "1.5.4",
-        "@vuepress/plugin-pwa": "1.5.3",
+        "@vuepress/plugin-pwa": "1.5.4",
         "art-template": "4.13.2",
         "art-template-loader": "1.4.3",
         "autoprefixer": "^9.6.1",

yarn.lock

@@ -1238,12 +1238,12 @@
   dependencies:
     nprogress "^0.2.0"
 
-"@vuepress/plugin-pwa@1.5.3":
-  version "1.5.3"
-  resolved "https://registry.yarnpkg.com/@vuepress/plugin-pwa/-/plugin-pwa-1.5.3.tgz#11de393d2c8fe5e58e3b8a68b17741bdf87006ce"
-  integrity sha512-3amFG0TMgsn4XeqNA91msp3SogshJwmkAcVm/Y0VC2oCrM37yz+655UGmcWhgAugKPnlxsOq9DK3Al+2vwSF9w==
+"@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==
   dependencies:
-    "@vuepress/shared-utils" "1.5.3"
+    "@vuepress/shared-utils" "1.5.4"
     register-service-worker "^1.7.0"
     workbox-build "^4.3.1"
 
@@ -1275,6 +1275,21 @@
     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==
+  dependencies:
+    chalk "^2.3.2"
+    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"
+    toml "^3.0.0"
+    upath "^1.1.0"
+
 "@vuepress/theme-default@1.5.3":
   version "1.5.3"
   resolved "https://registry.yarnpkg.com/@vuepress/theme-default/-/theme-default-1.5.3.tgz#98112065b3c987d41463eca5db91a47dce823e45"