Upgrade dependencies.

Author: trekhleb

package-lock.json

@@ -33,17 +33,17 @@
   },
   "homepage": "https://github.com/trekhleb/javascript-algorithms#readme",
   "devDependencies": {
-    "@babel/cli": "^7.4.4",
-    "@babel/preset-env": "^7.4.5",
-    "@types/jest": "^24.0.15",
-    "eslint": "^6.0.1",
-    "eslint-config-airbnb": "^17.1.0",
-    "eslint-plugin-import": "^2.18.0",
-    "eslint-plugin-jest": "^22.7.1",
-    "eslint-plugin-jsx-a11y": "^6.2.1",
-    "eslint-plugin-react": "^7.14.2",
-    "husky": "^2.5.0",
-    "jest": "^24.8.0"
+    "@babel/cli": "^7.10.5",
+    "@babel/preset-env": "^7.10.4",
+    "@types/jest": "^24.9.1",
+    "eslint": "^6.8.0",
+    "eslint-config-airbnb": "^17.1.1",
+    "eslint-plugin-import": "^2.22.0",
+    "eslint-plugin-jest": "^22.21.0",
+    "eslint-plugin-jsx-a11y": "^6.3.1",
+    "eslint-plugin-react": "^7.20.3",
+    "husky": "^2.7.0",
+    "jest": "^24.9.0"
   },
   "dependencies": {}
 }