Bump bootstrap-sass in /_site/play-with-docker/Portus

Bumps [bootstrap-sass](https://github.com/twbs/bootstrap-sass) from 3.3.7 to 3.4.1.
- [Release notes](https://github.com/twbs/bootstrap-sass/releases)
- [Changelog](https://github.com/twbs/bootstrap-sass/blob/master/CHANGELOG.md)
- [Commits](twbs/bootstrap-sass@v3.3.7...v3.4.1)

---
updated-dependencies:
- dependency-name: bootstrap-sass
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

_site/play-with-docker/Portus/package.json

@@ -15,7 +15,7 @@
     "webpack-dev-server": "^2.3.0"
   },
   "dependencies": {
-    "bootstrap-sass": "^3.3.6",
+    "bootstrap-sass": "^3.4.1",
     "compression-webpack-plugin": "^0.3.2",
     "jquery": "^3.5.0",
     "jquery-ujs": "^1.2.1",

_site/play-with-docker/Portus/yarn.lock

@@ -639,9 +639,9 @@ [email protected]:
   dependencies:
     hoek "2.x.x"
 
-bootstrap-sass@^3.3.6:
-  version "3.3.7"
-  resolved "https://registry.yarnpkg.com/bootstrap-sass/-/bootstrap-sass-3.3.7.tgz#6596c7ab40f6637393323ab0bc80d064fc630498"
+bootstrap-sass@^3.4.1:
+  version "3.4.1"
+  resolved "https://registry.yarnpkg.com/bootstrap-sass/-/bootstrap-sass-3.4.1.tgz#6843c73b1c258a0ac5cb2cc6f6f5285b664a8e9a"
 
 brace-expansion@^1.0.0:
   version "1.1.6"