Update plugin name to WooPayments (#7676) #21025

Job	Run time
Generate the matrix for subscriptions-tests dynamically	1s
WP - nightly \| WC - latest \| wcpay - merchant	11m 19s
WP - nightly \| WC - latest \| wcpay - shopper	13m 17s
WP - nightly \| WC - latest \| subscriptions - merchant	4m 59s
WP - nightly \| WC - latest \| subscriptions - shopper	6m 41s
WC - 7.7.0 \| wcpay - merchant	16m 41s
WC - 7.7.0 \| wcpay - shopper	11m 33s
WC - 7.7.0 \| subscriptions - merchant	5m 43s
WC - 7.7.0 \| subscriptions - shopper	7m 54s
WC - latest \| wcpay - merchant	11m 8s
WC - latest \| wcpay - shopper	12m 25s
WC - latest \| subscriptions - merchant	7m 38s
WC - latest \| subscriptions - shopper	6m 42s
	1h 56m 1s

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