Update babel monorepo to v7.12.7

Author: renovate-bot

package.json

@@ -35,10 +35,10 @@
     "@aureooms/js-integer-big-endian": "10.1.0",
     "@aureooms/js-number": "3.1.0",
     "@aureooms/js-prime": "4.0.0",
-    "@babel/cli": "7.12.1",
-    "@babel/core": "7.12.3",
+    "@babel/cli": "7.12.7",
+    "@babel/core": "7.12.7",
     "@babel/polyfill": "7.12.1",
-    "@babel/preset-env": "7.12.1",
+    "@babel/preset-env": "7.12.7",
     "@babel/register": "7.12.1",
     "ava": "3.13.0",
     "bn.js": "5.1.3",