Update Playground with the latest postcss-rtlscss and postcss libraries

Author: elchininet

playground/package.json

@@ -21,41 +21,41 @@
   "license": "MIT",
   "dependencies": {
     "@emotion/core": "^10.0.35",
-    "monaco-editor": "^0.20.0",
-    "postcss": "^7.0.32",
-    "postcss-rtlcss": "^1.6.1",
-    "react": "^16.13.1",
-    "react-dom": "^16.13.1"
+    "monaco-editor": "^0.21.2",
+    "postcss": "^8.2.1",
+    "postcss-rtlcss": "^2.0.0",
+    "react": "^17.0.1",
+    "react-dom": "^17.0.1"
   },
   "devDependencies": {
-    "@babel/core": "^7.11.1",
-    "@babel/preset-env": "^7.11.0",
-    "@babel/preset-react": "^7.10.4",
-    "@babel/preset-typescript": "^7.10.4",
+    "@babel/core": "^7.12.10",
+    "@babel/preset-env": "^7.12.11",
+    "@babel/preset-react": "^7.12.10",
+    "@babel/preset-typescript": "^7.12.7",
     "@emotion/babel-preset-css-prop": "^10.0.27",
-    "@types/eslint": "^7.2.0",
-    "@types/node": "^14.6.0",
-    "@types/react": "^16.9.46",
-    "@types/react-dom": "^16.9.8",
-    "@typescript-eslint/eslint-plugin": "^3.9.1",
-    "@typescript-eslint/parser": "^3.9.1",
-    "babel-loader": "^8.1.0",
+    "@types/eslint": "^7.2.6",
+    "@types/node": "^14.14.14",
+    "@types/react": "^17.0.0",
+    "@types/react-dom": "^17.0.0",
+    "@typescript-eslint/eslint-plugin": "^4.10.0",
+    "@typescript-eslint/parser": "^4.10.0",
+    "babel-loader": "^8.2.2",
     "clean-webpack-plugin": "^3.0.0",
     "copy-webpack-plugin": "^6.0.3",
-    "css-loader": "^4.2.1",
-    "eslint": "^7.7.0",
-    "eslint-plugin-react": "^7.20.6",
+    "css-loader": "^5.0.1",
+    "eslint": "^7.15.0",
+    "eslint-plugin-react": "^7.21.5",
     "eslint-utils": "^2.1.0",
     "facepaint": "^1.2.1",
-    "file-loader": "^6.0.0",
-    "html-webpack-plugin": "^4.3.0",
-    "mini-css-extract-plugin": "^0.10.0",
-    "monaco-editor-webpack-plugin": "^1.9.0",
+    "file-loader": "^6.2.0",
+    "html-webpack-plugin": "^4.5.0",
+    "mini-css-extract-plugin": "^1.3.3",
+    "monaco-editor-webpack-plugin": "^2.0.0",
     "plop": "^2.7.4",
     "react-github-btn": "^1.2.0",
     "tsconfig-paths": "^3.9.0",
     "tscpaths": "^0.0.9",
-    "typescript": "^3.9.7",
+    "typescript": "^4.1.3",
     "webpack": "^4.44.1",
     "webpack-cli": "^3.3.12",
     "webpack-dev-server": "^3.11.0"