Updated dependencies

Signed-off-by: Jim Martens <github@2martens.de>

package.json

@@ -6,34 +6,35 @@
   "dependencies": {
     "bootstrap": "^4.3.1",
     "jquery": "^3.4.0",
-    "popper.js": "^1.14.7"
+    "js-yaml": "3.13.1",
+    "popper.js": "^1.15.0"
   },
   "devDependencies": {
-    "@babel/core": "^7.3.4",
-    "@babel/preset-env": "^7.3.4",
-    "autoprefixer": "^9.4.9",
+    "@babel/core": "^7.4.5",
+    "@babel/preset-env": "^7.4.5",
+    "autoprefixer": "^9.6.0",
     "babel-polyfill": "^6.26.0",
-    "braces": "^2.3.2",
-    "browser-sync": "^2.26.5",
+    "braces": "^3.0.2",
+    "browser-sync": "^2.26.7",
     "child_process": "^1.0.2",
-    "del": "^3.0.0",
+    "del": "^4.1.1",
     "fstream": "^1.0.12",
-    "gulp": "^4.0.0",
+    "gulp": "^4.0.2",
     "gulp-babel": "^8.0.0",
-    "gulp-clean-css": "^4.0.0",
+    "gulp-clean-css": "^4.2.0",
     "gulp-concat": "^2.6.1",
-    "gulp-imagemin": "^5.0.3",
+    "gulp-imagemin": "^6.0.0",
     "gulp-notify": "^3.2.0",
     "gulp-postcss": "^8.0.0",
     "gulp-rename": "^1.4.0",
     "gulp-run": "^1.7.1",
     "gulp-sass": "^4.0.2",
     "gulp-sourcemaps": "^2.6.5",
-    "gulp-terser": "^1.1.7",
+    "gulp-terser": "^1.2.0",
     "gulp-util": "^3.0.8",
     "localtunnel": "^1.9.2",
-    "micromatch": "^3.1.10",
-    "node-sass": "^4.11.0"
+    "micromatch": "^4.0.2",
+    "node-sass": "^4.12.0"
   },
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1"