⬆️ deps: Upgrade babel monorepo to v7.15.4

Author: renovate-bot

package.json

@@ -64,8 +64,8 @@
     "@data-structure-algebra/circularly-linked-list": "^3.0.0"
   },
   "devDependencies": {
-    "@babel/core": "7.15.0",
-    "@babel/preset-env": "7.15.0",
+    "@babel/core": "7.15.4",
+    "@babel/preset-env": "7.15.4",
     "@babel/register": "7.15.3",
     "@commitlint/cli": "13.1.0",
     "@heap-data-structure/specification": "16.0.0",