Using http protocol is insecure. Use https instead [#3374987]

In date/date_views/includes/date_views_argument_handler_simple.inc line 140 there are a http url instead of https, and sonarqube alerts me in the recurity review:
"Using http protocol is insecure. Use https instead"

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3374987-using-http-protocol changes, plain diff MR !24
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