Update mini-css-extract-plugin requirement from ^0.5.0 to ^0.8.0

Updates the requirements on [mini-css-extract-plugin](https://github.com/webpack-contrib/mini-css-extract-plugin) to permit the latest version.
- [Release notes](https://github.com/webpack-contrib/mini-css-extract-plugin/releases)
- [Changelog](https://github.com/webpack-contrib/mini-css-extract-plugin/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webpack-contrib/mini-css-extract-plugin/compare/v0.5.0...v0.8.0)

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

package-lock.json

@@ -5954,12 +5954,13 @@
 			"dev": true
 		},
 		"mini-css-extract-plugin": {
-			"version": "0.5.0",
-			"resolved": "https://registry.npmjs.org/mini-css-extract-plugin/-/mini-css-extract-plugin-0.5.0.tgz",
-			"integrity": "sha512-IuaLjruM0vMKhUUT51fQdQzBYTX49dLj8w68ALEAe2A4iYNpIC4eMac67mt3NzycvjOlf07/kYxJDc0RTl1Wqw==",
+			"version": "0.8.0",
+			"resolved": "https://registry.npmjs.org/mini-css-extract-plugin/-/mini-css-extract-plugin-0.8.0.tgz",
+			"integrity": "sha512-MNpRGbNA52q6U92i0qbVpQNsgk7LExy41MdAlG84FeytfDOtRIf/mCHdEgG8rpTKOaNKiqUnZdlptF469hxqOw==",
 			"dev": true,
 			"requires": {
 				"loader-utils": "^1.1.0",
+				"normalize-url": "1.9.1",
 				"schema-utils": "^1.0.0",
 				"webpack-sources": "^1.1.0"
 			}
@@ -6358,6 +6359,18 @@
 			"integrity": "sha1-0LFF62kRicY6eNIB3E/bEpPvDAM=",
 			"dev": true
 		},
+		"normalize-url": {
+			"version": "1.9.1",
+			"resolved": "https://registry.npmjs.org/normalize-url/-/normalize-url-1.9.1.tgz",
+			"integrity": "sha1-LMDWazHqIwNkWENuNiDYWVTGbDw=",
+			"dev": true,
+			"requires": {
+				"object-assign": "^4.0.1",
+				"prepend-http": "^1.0.0",
+				"query-string": "^4.1.0",
+				"sort-keys": "^1.0.0"
+			}
+		},
 		"npm-run-path": {
 			"version": "2.0.2",
 			"resolved": "https://registry.npmjs.org/npm-run-path/-/npm-run-path-2.0.2.tgz",
@@ -7010,6 +7023,12 @@
 			"integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ=",
 			"dev": true
 		},
+		"prepend-http": {
+			"version": "1.0.4",
+			"resolved": "https://registry.npmjs.org/prepend-http/-/prepend-http-1.0.4.tgz",
+			"integrity": "sha1-1PRWKwzjaW5BrFLQ4ALlemNdxtw=",
+			"dev": true
+		},
 		"prettier": {
 			"version": "1.18.2",
 			"resolved": "https://registry.npmjs.org/prettier/-/prettier-1.18.2.tgz",
@@ -7225,6 +7244,16 @@
 			"integrity": "sha512-N5ZAX4/LxJmF+7wN74pUD6qAh9/wnvdQcjq9TZjevvXzSUo7bfmw91saqMjzGS2xq91/odN2dW/WOl7qQHNDGA==",
 			"dev": true
 		},
+		"query-string": {
+			"version": "4.3.4",
+			"resolved": "https://registry.npmjs.org/query-string/-/query-string-4.3.4.tgz",
+			"integrity": "sha1-u7aTucqRXCMlFbIosaArYJBD2+s=",
+			"dev": true,
+			"requires": {
+				"object-assign": "^4.1.0",
+				"strict-uri-encode": "^1.0.0"
+			}
+		},
 		"querystring": {
 			"version": "0.2.0",
 			"resolved": "https://registry.npmjs.org/querystring/-/querystring-0.2.0.tgz",
@@ -8063,6 +8092,15 @@
 				}
 			}
 		},
+		"sort-keys": {
+			"version": "1.1.2",
+			"resolved": "https://registry.npmjs.org/sort-keys/-/sort-keys-1.1.2.tgz",
+			"integrity": "sha1-RBttTTRnmPG05J6JIK37oOVD+a0=",
+			"dev": true,
+			"requires": {
+				"is-plain-obj": "^1.0.0"
+			}
+		},
 		"source-list-map": {
 			"version": "2.0.1",
 			"resolved": "https://registry.npmjs.org/source-list-map/-/source-list-map-2.0.1.tgz",
@@ -8266,6 +8304,12 @@
 			"integrity": "sha1-1cdSgl5TZ+eG944Y5EXqIjoVWVI=",
 			"dev": true
 		},
+		"strict-uri-encode": {
+			"version": "1.1.0",
+			"resolved": "https://registry.npmjs.org/strict-uri-encode/-/strict-uri-encode-1.1.0.tgz",
+			"integrity": "sha1-J5siXfHVgrH1TmWt3UNS4Y+qBxM=",
+			"dev": true
+		},
 		"string-width": {
 			"version": "2.1.1",
 			"resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",

package.json

@@ -104,7 +104,7 @@
 		"eslint-plugin-vue": "^5.2.2",
 		"extract-text-webpack-plugin": "^3.0.2",
 		"file-loader": "^4.2.0",
-		"mini-css-extract-plugin": "^0.5.0",
+		"mini-css-extract-plugin": "^0.8.0",
 		"node-sass": "^4.11.0",
 		"prettier-eslint": "^9.0.0",
 		"raw-loader": "^3.1.0",