Bump stylelint-config-standard from 20.0.0 to 21.0.0 in /natlas-server

Bumps [stylelint-config-standard](https://github.com/stylelint/stylelint-config-standard) from 20.0.0 to 21.0.0.
- [Release notes](https://github.com/stylelint/stylelint-config-standard/releases)
- [Changelog](https://github.com/stylelint/stylelint-config-standard/blob/master/CHANGELOG.md)
- [Commits](stylelint/stylelint-config-standard@20.0.0...21.0.0)

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

natlas-server/package.json

@@ -26,7 +26,7 @@
         "node-sass": "^5.0.0",
         "sass-loader": "^11.0.1",
         "stylelint": "^13.12.0",
-        "stylelint-config-standard": "^20.0.0",
+        "stylelint-config-standard": "^21.0.0",
         "stylelint-scss": "^3.19.0",
         "ts-loader": "^8.0.17",
         "tslint": "^6.1.3",

natlas-server/yarn.lock

@@ -5773,17 +5773,17 @@ style-search@^0.1.0:
   resolved "https://registry.yarnpkg.com/style-search/-/style-search-0.1.0.tgz#7958c793e47e32e07d2b5cafe5c0bf8e12e77902"
   integrity sha1-eVjHk+R+MuB9K1yv5cC/jhLneQI=
 
-stylelint-config-recommended@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/stylelint-config-recommended/-/stylelint-config-recommended-3.0.0.tgz#e0e547434016c5539fe2650afd58049a2fd1d657"
-  integrity sha512-F6yTRuc06xr1h5Qw/ykb2LuFynJ2IxkKfCMf+1xqPffkxh0S09Zc902XCffcsw/XMFq/OzQ1w54fLIDtmRNHnQ==
+stylelint-config-recommended@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/stylelint-config-recommended/-/stylelint-config-recommended-4.0.0.tgz#665a0034065e6704d5032ba51bf4efa37d328ef9"
+  integrity sha512-sgna89Ng+25Hr9kmmaIxpGWt2LStVm1xf1807PdcWasiPDaOTkOHRL61sINw0twky7QMzafCGToGDnHT/kTHtQ==
 
-stylelint-config-standard@^20.0.0:
-  version "20.0.0"
-  resolved "https://registry.yarnpkg.com/stylelint-config-standard/-/stylelint-config-standard-20.0.0.tgz#06135090c9e064befee3d594289f50e295b5e20d"
-  integrity sha512-IB2iFdzOTA/zS4jSVav6z+wGtin08qfj+YyExHB3LF9lnouQht//YyB0KZq9gGz5HNPkddHOzcY8HsUey6ZUlA==
+stylelint-config-standard@^21.0.0:
+  version "21.0.0"
+  resolved "https://registry.yarnpkg.com/stylelint-config-standard/-/stylelint-config-standard-21.0.0.tgz#4942cfa27301eb6702fa8fc46a44da35d1a5cfd7"
+  integrity sha512-Yf6mx5oYEbQQJxWuW7X3t1gcxqbUx52qC9SMS3saC2ruOVYEyqmr5zSW6k3wXflDjjFrPhar3kp68ugRopmlzg==
   dependencies:
-    stylelint-config-recommended "^3.0.0"
+    stylelint-config-recommended "^4.0.0"
 
 stylelint-scss@^3.19.0:
   version "3.19.0"