update packages to latest version

node_modules/npm/doc/api/npm-ping.md

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+npm-ping(3) -- Ping npm registry
+================================
+
+## SYNOPSIS
+
+    npm.registry.ping(registry, options, function (er, pong))
+
+## DESCRIPTION
+
+Attempts to connect to the given registry, returning a `pong`
+object with various metadata if it succeeds.
+
+This function is primarily useful for debugging connection issues
+to npm registries.