fix: Use browserslist-config

We were installing browserslist-config but not declaring it.  This had
the effect that webpack - and likely others - were not using it.

package-lock.json

@@ -57,7 +57,7 @@
         "whatwg-fetch": "^3.6.2"
       },
       "devDependencies": {
-        "@edx/browserslist-config": "^1.2.0",
+        "@edx/browserslist-config": "^1.3.0",
         "@edx/react-unit-test-utils": "3.0.0",
         "@edx/reactifex": "^2.1.1",
         "@openedx/frontend-build": "14.0.3",
@@ -2048,10 +2048,11 @@
       "integrity": "sha512-Dn9CtpC8fovh++Xi4NF5NJoeR9yU2yXZnV9IujxIyGd/dn0Phq5t6dzJVfupwq09mpDnzJv7egA8Znz/3ljO+w=="
     },
     "node_modules/@edx/browserslist-config": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/@edx/browserslist-config/-/browserslist-config-1.2.0.tgz",
-      "integrity": "sha512-T1+6P52Yx7SMkmoIr4O0Q3m/DyRdrLTJbv1xVijdRLFEq1hqdafEs+Ln1423U5LSkTePb9AOkEtL1G0RZLFl1w==",
-      "dev": true
+      "version": "1.3.0",
+      "resolved": "https://registry.npmjs.org/@edx/browserslist-config/-/browserslist-config-1.3.0.tgz",
+      "integrity": "sha512-qf4BHyjdsx/bVMQmfj1y/MwTZwI5+9DAOul+PJnyO+YhWSwdxtdvXqkOw1wLxqmDtqOPc5bYgDQf8zZfe+aDFA==",
+      "dev": true,
+      "license": "AGPL-3.0"
     },
     "node_modules/@edx/eslint-config": {
       "version": "4.0.0",

package.json

@@ -6,6 +6,9 @@
     "type": "git",
     "url": "git+https://github.com/edx/frontend-app-ora-grading.git"
   },
+  "browserslist": [
+    "extends @edx/browserslist-config"
+  ],
   "scripts": {
     "build": "fedx-scripts webpack",
     "i18n_extract": "fedx-scripts formatjs extract",
@@ -72,7 +75,7 @@
     "whatwg-fetch": "^3.6.2"
   },
   "devDependencies": {
-    "@edx/browserslist-config": "^1.2.0",
+    "@edx/browserslist-config": "^1.3.0",
     "@edx/react-unit-test-utils": "3.0.0",
     "@edx/reactifex": "^2.1.1",
     "@openedx/frontend-build": "14.0.3",