try push_pod one more times

fastlane/Fastfile

@@ -88,11 +88,24 @@ lane :lint_fastfile do
 end
 
 def push_podspec(podspec_name)
-  pod_push(
-    path: podspec_name,
-    allow_warnings: true,
-    skip_tests: true
-  )
+  tries = 6
+  for i in 1..tries
+    begin
+         pod_push(
+            path: podspec_name,
+            allow_warnings: true,
+            skip_tests: true
+         )
+        break
+    rescue StandardError => error
+        if i == tries
+            raise
+        end
+        delay = 3**i
+        puts "retry pod_push after #{delay}"
+        sleep(delay)
+    end
+  end
 end
 
 def resolve_bump_type(options)