[Dev Deps] update safe-buffer, tape

Author: ljharb

package.json

@@ -32,8 +32,8 @@
   },
   "devDependencies": {
     "hash-test-vectors": "^1.3.2",
-    "safe-buffer": "^5.0.1",
+    "safe-buffer": "^5.2.1",
     "standard": "^10.0.2",
-    "tape": "^4.6.3"
+    "tape": "^5.9.0"
   }
 }