Revert "Update v8-versions.json"

This reverts commit 8d666a9.

Author: vtrifonov

v8-versions.json

@@ -1,5 +1,5 @@
 {
-    ">=6.0.9 <6.3.0": "7.6.303.28",
+    ">=6.0.9 <6.2.0": "7.6.303.28",
     ">=5.9.9 <6.0.9": "7.5.288.22",
     ">=5.3.9 <5.9.0": "7.4.288.25",
     ">=5.2.9 <5.4.0": "7.3.492.25",