Fix OpenSSL dependency in ostatus2 (#6174)

Gemfile.lock

@@ -299,13 +299,11 @@ GEM
       sidekiq (>= 3.5.0)
       statsd-ruby (~> 1.2.0)
     oj (3.3.9)
-    openssl (2.0.6)
     orm_adapter (0.5.0)
-    ostatus2 (2.0.1)
+    ostatus2 (2.0.2)
       addressable (~> 2.4)
       http (~> 2.0)
       nokogiri (~> 1.6)
-      openssl (~> 2.0)
     ox (2.8.2)
     paperclip (5.1.0)
       activemodel (>= 4.2.0)