Update JS dependencies (#11146)

Result of `make npm-update`. Some minor updates to build tools, no
runtime dependencies affected.

package.json

     "node": ">=10"
   },
   "dependencies": {
-    "@babel/core": "7.8.7",
-    "@babel/plugin-proposal-object-rest-spread": "7.8.3",
-    "@babel/plugin-transform-runtime": "7.8.3",
-    "@babel/preset-env": "7.8.7",
-    "@babel/runtime": "7.8.7",
+    "@babel/core": "7.9.0",
+    "@babel/plugin-proposal-object-rest-spread": "7.9.5",
+    "@babel/plugin-transform-runtime": "7.9.0",
+    "@babel/preset-env": "7.9.5",
+    "@babel/runtime": "7.9.2",
     "@primer/octicons": "9.6.0",
-    "babel-loader": "8.0.6",
+    "babel-loader": "8.1.0",
     "clipboard": "2.0.6",
     "copy-webpack-plugin": "5.1.1",
-    "core-js": "3.6.4",
-    "css-loader": "3.4.2",
+    "core-js": "3.6.5",
+    "css-loader": "3.5.2",
     "cssnano": "4.1.10",
     "domino": "2.1.4",
     "dropzone": "5.7.0",
     "postcss-loader": "3.0.0",
     "postcss-preset-env": "6.7.0",
     "postcss-safe-parser": "4.0.2",
-    "svg-sprite-loader": "4.2.1",
+    "svg-sprite-loader": "4.2.5",
     "svgo": "1.3.2",
     "svgo-loader": "2.2.1",
     "swagger-ui": "3.25.0",
     "vue": "2.6.11",
     "vue-bar-graph": "1.2.0",
     "vue-calendar-heatmap": "0.8.4",
-    "vue-loader": "15.9.0",
+    "vue-loader": "15.9.1",
     "vue-template-compiler": "2.6.11",
-    "webpack": "4.42.0",
+    "webpack": "4.42.1",
     "webpack-cli": "3.3.11",
     "webpack-fix-style-only-entries": "0.4.0",
     "worker-loader": "2.0.0"
   "devDependencies": {
     "eslint": "6.8.0",
     "eslint-config-airbnb-base": "14.1.0",
-    "eslint-plugin-import": "2.20.1",
-    "stylelint": "13.2.1",
+    "eslint-plugin-import": "2.20.2",
+    "stylelint": "13.3.2",
     "stylelint-config-standard": "20.0.0",
-    "updates": "10.2.4"
+    "updates": "10.2.8"
   },
   "browserslist": [
     "defaults"