Bump dependencies

package.json

@@ -64,7 +64,7 @@
     "@babel/preset-env": "^7.10.2",
     "@converse/headless": "file:src/headless",
     "@fortawesome/fontawesome-free": "5.13.0",
-    "autoprefixer": "^9.7.6",
+    "autoprefixer": "^9.8.4",
     "babel-eslint": "^10.1.0",
     "babel-loader": "^8.1.0",
     "bootstrap": "^4.3.1",
@@ -87,7 +87,7 @@
     "install": "^0.13.0",
     "jasmine": "^3.5.0",
     "jsdoc": "^3.6.4",
-    "karma": "^5.0.9",
+    "karma": "^5.1.0",
     "karma-chrome-launcher": "^3.1.0",
     "karma-cli": "^2.0.0",
     "karma-jasmine": "^3.1.1",
@@ -99,7 +99,7 @@
     "lodash-template-webpack-loader": "jcbrand/lodash-template-webpack-loader",
     "mini-css-extract-plugin": "^0.9.0",
     "minimist": "^1.2.3",
-    "node-sass": "^4.14.0",
+    "node-sass": "^4.14.1",
     "npm": "^6.14.5",
     "po-loader": "^0.5.0",
     "po2json": "^1.0.0-beta",